This means that the primary end or purpose of procreation (in thought and action) can not be made subordinate or subject to the secondary ends or purposes and that the primary end must always exist for the marital act to be lawful while the secondary ends or motives are not needed at all in order to lawfully perform the marital act. This is also exactly how Our Lord Jesus Christ in the Bible wants us to view the sexual pleasure and the marital act, since it is a higher calling to live for the Spirit than for our own selfish and fleshly desires. “And now, Lord, thou knowest, that not for fleshly lust do I take my sister to wife, but only for the love of posterity, [children] in which thy name may be blessed for ever and ever.” (The Holy Bible, Tobias 8:9)
Notice how clearly and unambiguously Pope Pius XI teaches that married people are not even allowed to “consider” the secondary ends of marriage unless they are subordinated to the primary purpose of marriage (procreation) and unless “the intrinsic nature of the act is preserved” which means that one may never perform anything other than the normal, natural and procreative marital act itself since all other sexual acts are not in conformity to procreation and “the intrinsic nature of the [marital] act”. It is therefore clear that it is totally “forbidden” and mortally sinful to even consider the secondary ends or motives, much less to perform the sexual act, unless “the intrinsic nature of the act is preserved”. The secondary ends “such as mutual aid, the cultivation of mutual love, and the quieting of concupiscence” can follow after the primary end or purpose of begetting children if the spouses choose this, but the secondary ends or motives are not absolutely needed to lawfully perform the marital act in the same way as the primary purpose of begetting children, nor is the secondary motive of quieting concupiscence meritorious even though it is allowed.
St. Augustine, On the Good of Marriage, Chapter 11, 12, A.D. 401: “… nor be changed into that use which is against nature, on which the Apostle could not be silent, when speaking of the excessive corruptions of unclean and impious men. For necessary sexual intercourse for begetting [of children] is free from blame, and itself is alone worthy of marriage. But that which goes beyond this necessity [of begetting children] no longer follows reason but lust. … they [must] not turn away from them the mercy of God… by changing the natural use into that which is against nature, which is more damnable when it is done in the case of husband or wife. Of so great power is the ordinance of the Creator, and the order of creation, that… when the man shall wish to use a body part of the wife not allowed for this purpose, the wife is more shameful, if she suffer it to take place in her own case, than if in the case of another woman.”
The expression “that use which is against nature” refers to unnatural sexual acts, such as oral, anal, or manual sex (masturbation). St. Augustine condemns such acts unequivocally. He even states that such unnatural sexual acts are more damnable (i.e. even more serious mortal sins) when these take place within marriage. The reason why is that God is even more offended by a sexual mortal sin that takes place within the Sacrament of Marriage, since this offense is not only against nature, but also against a Holy Sacrament. “So then, of all to whom much has been given, much will be required. And of those to whom much has been entrusted, even more will be asked.” (Luke 12:48)
The Catechism of the Council of Trent: “Matrimonial faith also demands, that husband and wife be united by a certain singular, and holy, and pure love, a love not such as that of adulterers, but such as that which Christ cherishes towards his Church; for this is the model which the Apostle proposed, when he said: "Husbands, love your wives, as Christ also loved the Church" (Ephesians 5:25); and very great indeed was the love with which Christ embraced his Church, not a selfish love, but a love that proposed to itself the sole interest of his spouse...” (Question XXIV. — What is Faith in Matrimony, and how it is to be preserved)
Therefore, non-procreative sexual acts cannot be justified by saying that it leads to the marital act; it is by nature a separate action whose object is gravely immoral. Unnatural sexual acts are non-procreative, intrinsically evil, and always gravely immoral, regardless of intention or circumstances, even within marriage. Unnatural sexual acts cannot be justified as a type of foreplay in order to prepare for the natural marital act because the end never justifies the means. And the absence of sexual climax does not change an intrinsically evil, gravely immoral, unnatural sexual act into an act that is good or morally defensible.
Neither can one argue that these kinds of non-procreative sexual acts can be used if necessity requires it for the sexual act to be performed or if there is a problem with performing the marital act without them, for acts that are gravely immoral can never be justified in any circumstance. “But no reason, however grave, may be put forward by which anything intrinsically against nature may become conformable to nature and morally good.” (Pope Pius XI, Casti Connubii #54)
Those who have a problem in performing the marital act should use a lubricant in order to be able to complete the normal, natural and procreative marital act, for this is a lawful and honorable solution to use if there is a problem to perform the marital act. “May marriage be honorable in all, and may the bed be undefiled. For God will judge fornicators and adulterers.” (Hebrews 13:4)
Further, the consequences of this behavior of deviant sexuality (consequences are a witness as well to the Natural Law), is disease. There is research that shows women’s risk of fungal infection increases 10 fold with this type of behavior. There are other risks as well, some mouth cancers, which research is beginning to show may be a result of the sexually transmitted disease. “Having therefore these promises, dearly beloved, let us cleanse ourselves from all defilement of the flesh and of the spirit, perfecting sanctification in the fear of God.” (2 Corinthians 7:1)
The leading cause of mouth and throat cancer is not tobacco smoking or alcohol use. Oral sex is now listed as the leading cause of cancer of the mouth and throat (oropharynx cancer). A new research published in the Journal of Clinical Oncology and authored by Dr. Maura Gillison states that persons who had practiced oral sex are eight times more likely than those who have not had oral sex to develop human papilloma virus (HPV). HPV, the most commonly transmitted sexual disease, is the leading cause of cancer of the oropharnyx in the US. The number of people diagnosed with HPV-related oral cancers in the U.S. tripled from 1998 to 2004.
St. Barnabas, Letter of Barnabas, Chapter 10:8, A.D. 74: “Moreover, he [Moses] has rightly detested the weasel [Leviticus 11:29]. For he means, ‘Thou shalt not be like to those whom we hear of as committing wickedness with the mouth through uncleanness [oral sex]; nor shalt thou be joined to those impure women who commit iniquity with the mouth with the body through uncleanness.’” (Chapter X. — Spiritual Significance of the Precepts of Moses Respecting Different Kinds of [Forbidden] Food)
It is clear that the Church and Her Saints rejects the heretical modern-day idea that the mere deposit of semen in the correct location justifies all other sexual acts. Every single sexual act must be marital and procreative, and one is not justified in adding sexual acts (such as oral or anal sex) that are not procreative in themselves. One cannot justify a set or number of non-procreative forms of sexual acts by performing a procreative form of a sexual act before, during or after one has performed these non-procreative forms of sexual acts, because every sexual act must be able to beget children in itself. The sexual act is only allowed to be performed as long as the purpose and ability of the act itself to procreate is present, and when this intention and ability is not there, the sexual act will always be a sin.
Pope St. Clement of Rome (1st century AD): “But this kind of chastity is also to be observed, that sexual intercourse must not take place heedlessly and for the sake of mere pleasure, but for the sake of begetting children. And since this observance is found even amongst some of the lower animals, it were a shame if it be not observed by men, reasonable, and worshiping God.” (Recognitions of Clement, Chapter XII, Importance of Chastity)
The Catholic Church and Her Saints have always taught that illicit, non-procreative and unnecessary sexual acts within marriage are equivalent to fornication and adultery.
St. Jerome, Against Jovinianus, Book 1, Section 49, A.D. 393: “And it makes no difference how honorable may be the cause of a man’s insanity. Hence Xystus in his Sentences tells us that ‘He who too ardently loves his own wife is an adulterer.’ It is disgraceful to love another man’s wife at all, or one’s own too much. A wise man ought to love his wife with judgment, not with passion. Let a man govern his voluptuous impulses, and not rush headlong into intercourse. There is nothing blacker than to love a wife as if she were an adulteress.”
Gratian, Medieval Marriage Law, Case Thirty-Two, Question IV: “Also, Jerome, [in Against Jovinian, I]: C. 5. Nothing is more sordid than to make love to your wife as you would to an adulteress. The origins of love are respectable, but its perversion is an enormity. §1. It gives no respectable motive for losing one’s self control. Hence, the Sentences of Sixtus says, "He is an adulterer who is too passionate a lover of his wife." Just as all passion for another’s wife is sordid, so also is excessive passion for one’s own. The wise man should love his wife reasonably, not emotionally. The mere stimulus of lust should not dominate him, nor should he force her to have sex. Nothing is more sordid than to make love to your wife as you would to an adulteress.”
Notice that St. Jerome states that “it makes no difference how honorable may be the cause of a man’s insanity.” In other words, the intention which motivates a man to sin is irrelevant to the morality of the act. If a sexual act is a sin, it does not matter how honorable the man’s intentions are, it is still a serious moral disorder, comparable, as a figure of speech, to the serious mental disorder of insanity. St. Jerome plainly taught that there are sexual sins and excessive passion within marriage and between spouses, just like countless of others Popes and Saints taught. He said: “Let a man govern his voluptuous impulses, and not rush headlong into intercourse.” The idea that “nothing is shameful or sinful” in the marital act as long as the marital act occurs at some point in time is plainly rejected by St. Jerome, the Church and the rest of the Saints. It is contrary to wisdom and good judgment for a man to have sexual relations with his wife in an inordinate and excessive manner. The fact of the matter is that all those who have sexual relations with their spouse in an inordinate and excessive manner, or who perform unnatural or non-procreative forms of sexual acts, are guilty of the crucifixion of Our Lord Jesus Christ by their evil, sinful and selfish acts. This truth was expressly revealed by Our Lord Jesus Christ Himself in a revelation to Blessed Angela of Foligno (1248-1309) in the following words:
Our Lord Jesus Christ spoke, saying: “For the sins of thy hands and arms, with which thou hast done much wickedness in embraces, touches, and other evil deeds, My hands were driven into the wood of the Cross by large nails and torn through bearing the weight of My body in Mine agony.” (Blessed Angela of Foligno, 1248-1309, The Book of Divine Consolations, p. 217)
Therefore, unnatural and non-procreative sexual acts do not become permissible when these take place within marriage. Instead, unnatural sexual acts are made even more sinful when they take place within marriage because they offend not only against nature and a Holy Sacrament, but also against God and the Law written in our hearts.
“And since the man who is too ardent a lover of his wife acts counter to the good of marriage if he use her indecently, although he be not unfaithful, he may in a sense be called an adulterer; and even more so than he that is too ardent a lover of another woman.” (St. Thomas Aquinas, Summa Theologica, Second Part of the Second Part, Q. 154, Art. 8)
Notice in the quote above that St. Thomas held sexual sins within marriage to be worse than adultery, because the act occurs within marriage. He did not teach that all sexual acts between a husband and wife are moral as many heretical and perverted “Catholics” nowadays do. “Be not deceived, God is not mocked. For what things a man shall sow, those also shall he reap. For he that soweth in his flesh, of the flesh also shall reap corruption. But he that soweth in the spirit, of the spirit shall reap life everlasting. And in doing good, let us not fail. For in due time we shall reap, not failing. Therefore, whilst we have time, let us work good to all men, but especially to those who are of the household of the faith.” (Galatians 6:7-10)
The marital act performed for pleasure only is condemned as a sin for both the married and unmarried people alike
The Catholic Church teaches that the normal, natural and procreative marital act when it is performed for the sole sake of pleasure, is at least a venial sin, and many times a mortal sin, provided one is not against conception or hinder it from taking place in anyway in either deed or thought.
Pope Innocent XI, Various Errors on Moral Matters #9, March 4, 1679: “THE ACT OF MARRIAGE EXERCISED FOR PLEASURE ONLY IS ENTIRELY FREE OF ALL FAULT AND VENIAL DEFECT.” – Condemned statement by Pope Innocent XI. (Denz. 1159)
St. Augustine, On Marriage and Concupiscence, Book 1, Chapter 17, A.D. 419: “It is, however, one thing for married persons to have intercourse only for the wish to beget children, which is not sinful: it is another thing for them to desire carnal pleasure in cohabitation, but with the spouse only, which involves venial sin.For although propagation of offspring is not the motive of the intercourse, there is still no attempt to prevent such propagation, either by wrong desire or evil appliance.”
As we can see here, it is at least a venial sin to have normal, natural and procreative marital relations merely for lustful motives, provided that the spouses are open to conception (and do not hinder it in anyway) and no other sinful deed or thought is committed during the act of marriage. From this can be understood that a couple must have a reason (other than carnal pleasure) for coming together without sin during the act of marriage. Thus, spouses are not to come together for whatever lustful reason or desire they may come to think of—for that would be, at least (if not more than) a venial sin according to the Catholic Church. All venial sins open up the soul to graver sins, and that is why one must always guard oneself very carefully from falling into venial sins.
Pope St. Gregory the Great (c. 540-604): “The married must be admonished to bear in mind that they are united in wedlock for the purpose of procreation, and when they abandon themselves to immoderate intercourse, they transfer the occasion of procreation to the service of pleasure. Let them realize that though they do not then pass beyond the bonds of wedlock, yet in wedlock they exceed its rights. Wherefore, it is necessary that they efface by frequent prayer what they befoul in the fair form of conjugal union by the admixture of pleasure.” (St. Gregory the Great, "Pastoral Care," Part 3, Chapter 27, in "Ancient Christian Writers," No. 11, pp. 188-189)
The Catholic Church’s condemnation of even natural and normal so-called marital relations performed solely for lustful motives shows us that the Catholic Church absolutely abhors and condemns all sexual acts that are unnecessary for conception to occur (such as oral sex or masturbation of self or spouse, before, during or after the marital act). Every unnecessary and non-procreative form of a sexual act (such as sensual kisses, touches and masturbation) are obviously even more evil and depraved than the normal, natural and procreative “act of marriage exercised for pleasure only,” which the Church condemns as a sin. This clearly shows us that Holy Mother Church absolutely condemns all sexual acts performed for the sake of sensual pleasure that goes above or beyond what is inherent in the marital act itself, and that is necessary for conception to occur.
St. Athanasius the Great (293-373): “Which use [of marriage] are you referring to? That in the Law which God allowed... or that which, while popular, is performed secretly and adulterously [even by married people]? … Blessed is the man who in his youth having a free yoke employs his natural parts for the purpose of producing children. But if for licentiousness, the punishment spoken of by the Apostle shall await the immoral and adulterous (Heb. 13:4).” (First Epistle of Athanasius the Great addressed to the Monk Amun, Quoted in The Rudder, pp. 576-77)
The Church teaches that all unnecessary and non-procreative sexual acts are sinful, both before, during and after the act of marriage, and that these acts may never be performed in any circumstance or for any reason whatsoever by anyone. For just as it is blameworthy and sinful to have sexual relations only for sensual pleasure for both the married and unmarried people alike, so too is this true with other pleasures as well, such as “eating and drinking even to satiety for pleasure only,” and kissing “for the sake of the carnal and sensible delight which arises from the kiss”. This has always been the teaching of the Catholic Church and Her Saints.
Pope Innocent XI, Various Errors on Moral Matters #8, March 4, 1679: “Eating and drinking even to satiety for pleasure only, are not sinful, provided this does not stand in the way of health, since any natural appetite can licitly enjoy its own actions.” – Condemned statement by Pope Innocent XI.
Pope Alexander VII, Various Errors on Moral Matters #40, September 24, 1665 and March 18, 1666: “It is a probable opinion which states that a kiss is only venial when performed for the sake of the carnal and sensible delight which arises from the kiss, if danger of further consent and pollution is excluded.” – Condemned statement by Pope Alexander VII. (Denz. 1140)
St. Alphonsus Liguori, one of the most well known doctors of the Church, expounds on this teaching of Pope Innocent XI in his masterpiece “The True Spouse of Jesus Christ”, showing us the inherent evilness of acting in accordance to our sensual desires: “Pope Innocent XI Odescalchi has condemned the proposition which asserts that it is not a sin to eat or to drink from the sole motive of satisfying the palate. However, it is not a fault to feel pleasure in eating: for it is, generally speaking, impossible to eat without experiencing the delight which food naturally produces. But it is a defect to eat, like beasts, through the sole motive of sensual gratification, and without any reasonable object. Hence, the most delicious meats may be eaten without sin, if the motive be good and worthy of a rational creature; and, in taking the coarsest food through attachment to pleasure, there may be a fault.” (The True Spouse of Jesus Christ, p. 282)
This condemnation of “Eating and drinking even to satiety for pleasure only” and kissing “performed for the sake of the carnal and sensible delight” is not only reasonable, but part of the Natural Law, yet it may come as a surprise to many, but this is only because so many commit sins of this nature. Indeed, all people who fall into these kinds of sins have become slaves to their passions and do not order their acts in accordance with natural reason, but in accordance with their unmortified desires, like beasts, and yet, even worse than beasts.
St. Augustine, Sermons on the New Testament, Sermon 1, Section 24: “Seeing then that… the faithful man descends to both [marriage and food] as matter of duty, and does not fall into them through lust. But how many are there who rush greedily to their eating and drinking, and make their whole life to consist in them, as if they were the very reason for living. For whereas men really eat to live, they think that they live to eat. These will every wise man condemn, and Holy Scripture especially, all gluttons, drunkards, gormandizers, "whose god is their belly." [Phil. 3:19] Nothing but the lust of the flesh, and not the need of refreshment, carries them to the table. … And so in that other duty of marriage, sensual men seek for wives only to satisfy their sensuality, and therefore at length are scarce contented even with their wives. … Nevertheless, if you were to say to such a man, "why do you marry?" he would answer perhaps for very shame, "for the sake of children." But if any one in whom he could have unhesitating credit were to say to him, "God is able to give, and yea, and will give you children without your having any intercourse with your wife;" he would assuredly be driven to confess that it was not for the sake of children that he was seeking for a wife. Let him then acknowledge his infirmity, and so receive that which he pretended to receive only as matter of duty.”
The Bible states that a demon of lust “hath power” over all spouses who come together for various lustful reasons in their marital acts
In the Biblical book of Tobit or Tobias, we can read about how a powerful devil or demon of lust that is called Asmodeus kills and deceives lustful people, and that this demon “hath power” over married spouses and individuals who come together for various lustful reasons in their marital acts.
Tobias 6:16-17 “Then the angel Raphael said to him [Tobias]: Hear me, and I will shew thee who they are, over whom the devil can prevail. For they who in such manner receive matrimony, as to shut out God from themselves, and from their mind, and to give themselves to their lust, as the horse and mule, which have not understanding, over them the devil hath power.”
Haydock Commentary adds: “Verse 17.Mule, which are very libidinous, [Showing excessive sexual drive; lustful.] Psalm xiii.”
The interesting thing about the sexual connection of a horse and a mule is that they cannot produce offspring, thus making their sexual relations completely sterile and unproductive. So what does this mean for marriage? It means that this verse alone proves that God’s word condemns as sinful and unlawful all human sexual relations or acts that (1) are performed for the sole motive of lust; (2) that cannot produce offspring naturally (not referring to natural infertility or defects); (3) and that are done with an intention or mindset opposed to procreating offspring. Our Lord Jesus Christ in the New Testament of the Bible also connects the will to bear children to salvation, teaching us that a woman: “