I’m reposting this because there are some new comers to the thread and I STILL have not heard a halfway decent response to this. One person said the early Christians were obsessed with sex and another said they don’t care about the history of Christianity or protestantism. Neither of those are sufficient responses.
The Jews, early Christians, Protestant Reformers, and every Christian up to 1930 understood that contraception is a sin and they interpreted the Onan passage as condemning contraception. Nowadays Christians who don’t see birth control as a sin will say that Onan was killed because he disobeyed God and not for spilling his seed on the ground. The Jews, the early Christians, protestant reformers and every Christian up to 1930 understood this passage as condemning birth control.
Jews
Jewish Commentary on Onan
“[Onan] misused the organs God gave him for propagating the race to unnaturally satisfy his own lust, and he was therefore deserving of death” (Bereshis: Genesis [Brooklyn: Mesorah, 1980]. 5:1677)
experiencefestival.com/a/…ons/id/1817637
“The Jewish interpretation is that Onan spilt his seed, and therefore was deserving of the death penalty (see e.g. Babylonian Talmud tractate Niddah 13a)”
jewishjournal.com/nation/…trol_20100715/
“Orthodox Jews prohibit males from using contraceptives such as condoms that waste the “male seed,” a teaching derived from Genesis 38:9-10, in which God killed Onan for spilling his seed on the ground during intercourse.”
Church Fathers:
St. Augustine says: ‘For it is illicit and shameful for a man to lie with even his lawful wife in such a way as to prevent the conception of offspring. This is what Onan, son of Judah, used to do, and for that God slew him’ (cf. Gen. 38:8?10)."
John Chrysostom: "Why do you sow where the field is eager to destroy the fruit, where there are medicines of sterility [oral contraceptives], where there is murder before birth?. . . Indeed, it is something worse than murder, and I do not know what to call it; for she does not kill what is formed but prevents its formation. What then? Do you condemn the gift of God and Fight with his [natural] laws? (Homilies on Romans 24 [A.D. 391]).
Clement of Alexandria: “Because of its divine institution for the propagation of man, the seed is not to be vainly ejaculated, nor is it to be damaged, nor is it to be wasted” (The Instructor of Children 2:10:91:2 [A.D. 191])
Protestant Reformers:
Martin Luther said, “[T]he exceedingly foul deed of Onan, the basest of wretches . . . is a most disgraceful sin. It is far more atrocious than incest and adultery. We call it unchastity, yes, a sodomitic sin. For Onan goes in to her; that is, he lies with her and copulates, and when it comes to the point of insemination, spills the semen, lest the woman conceive. Surely at such a time the order of nature established by God in procreation should be followed. Accordingly, it was a most disgraceful crime. . . . Consequently, he deserved to be killed by God. He committed an evil deed. Therefore, God punished him.”
John Calvin said, “The voluntary spilling of semen outside of intercourse between man and woman is a monstrous thing. Deliberately to withdraw from coitus in order that semen may fall on the ground is doubly monstrous. For this is to extinguish the hope of the race and to kill before he is born the hoped-for offspring.”
John Wesley warned, “Those sins that dishonor the body are very displeasing to God, and the evidence of vile affections. Observe, the thing which he [Onan] did displeased the Lord—and it is to be feared; thousands, especially of single persons, by this very thing, still displease the Lord, and destroy their own souls.”
Even C.S. Lewis argued in the Abolition of Man that birth control will be the means by which man decides who is and isn’t born instead of God. In Mere Christianity he points out that the high degree of sexual promiscuity in modern times could only happen as a result of the acceptance of birth control.