And yet, you only put forth this one passage and it doesn't teach what you claimed...
Keep in mind that NO Christian leader or denomination approved of contraception before 1930
And that doesn't matter.
not a single Christian writing between the 1st and 19th centuries saw Onan's sin as other than perverting sexual intercourse, wasting his seed upon the ground. This is a Christian consensus.
Can't wait for you to prove that truth claim! What do you have to prove that?? Also, all that matters is what God's Word actually teaches, and not what others write about it.
This lines up perfectly with Natural Law, which sees fertility as a natural sign of health, and therefore the sabotage of fertility as a harm.
There is a difference between sabotage and regulation.
Thus Natural Law teaches that intentionally impairing fertility via any deviate intercourse included contracepted intercourse, sodomitical intercourse, intentional maiming of sexual competency via sterilization, castration or sex-reassignment surgery, is a wrong. This is acting against the good of normal, healthy sex by impairing its nature.
I rank God's Words as authoritative and He spent darn little time on the topic. This is why you are turning to "natural law."
Natural Law recognizes the good design of sexual intercourse. The Biblical perspective tells us Who was the Designer of this natural good, and for what purpose.
ALWAYS ignore consensus when it disagrees with God's Word and when it adds to God's Word. If people can ignore absolute Biblical and Christian consensus on that, lasting several millennia, it would not be surprising for people to approve other deviations from natural sex as well.
Deviant sex is condemned in Scripture.
It is deviant because it intentionally deconstructs the Creator's design. If you can rearrange organ and system function to suit your purposes, there's no reason you can't do anal penetration, sex reassaignment or any other form of perversion.
Oman’s sin was disobeying God. God told Onan that his seed was to conceive a child to his dead brother.