Millions of Christians and Jews throughout the centuries felt that the sin of Onan was the mere act of him spilling his seed and wasting it. This interpretation is not correct and I will prove it as much as I possibly can. In Genesis 38 it explains that two sons of Judah, Er and Onan were punished by God. For Er, it simply says that he was wicked in the sight of God, so God slew him. Er was married, but had no children, therefore not lot. Judah told Onan to take Er’s widow and marry her and to have children with her, but those children were to be Er’s lot, not Onan’s. Verse 9 says “And Onan knew that the seed should not be his; and it came to pass, when he went in unto his brother’s wife, that he spilled it on the ground, lest that he should give seed to his brother.” So why did God’s word repeat itself within that verse? It already said that he knew the seed should not be his, so why repeat that at the end of the verse? The reason was God was making a point. God was telling us what Onan’s sin actually was. It wasn’t the act of spilling his seed. It was why he did it that was the sin. It then says this thing displeased the Lord so He slew Onan, too. It’s true it was the act that sealed his fate, but without the act there would be no sin. As Jesus asked the wicked scribes and Pharisees in the Gospels, who does the will of his father: the one who agrees to do the task but doesn’t or the one who refuses to do the task, but repents and does it? It’s like how it’s been said that Lucifer’s/Helel’s fall was because of pride. Pride alone does nothing. It’s what pride had him do that made Helel fall.
If nearly everyone is right and I am wrong, then God’s word clashes later on then. In Hebrews 13:4 it says “Marriage is honorable in all, and the bed undefiled: but whoremongers and adulterers God will judge.” What this says is that whatever a man and a woman does in their bedroom is fine, as long as they’re married. If everyone is right and I am wrong, then Hebrews 13:4 would clash with their interpretation of the sin of Onan.
There are some things to consider though with what is right between a husband and wife. Obviously privacy is an issue, but there are other rules that even married couples must take into account. A woman cannot wear the clothes of a man, which means a woman can’t play the role of a man. That includes sexually. Men and women wore the same things back then, so one must realize this wasn’t a literal statement. Men also cannot be effeminate. Those two things must be abided by even married couples. Privacy is another issue. Putting videos on the internet or elsewhere would obviously be a sin.
Because humans are naturally squeemish when it comes to matters of sex, this helped with their misinterpretation. There are many more misinterpretations I will list in later posts, but this one plays with the consciences of many people. Just read Hebrews 13:4. That’s all you need.