Gen. 38:8-10 - Onan is killed by God for practicing contraception (in this case, withdrawal) and spilling his semen on the ground. Gen. 38:11-26 - Judah, like Onan, also rejected God's command to ...

Second, Onan was killed by God for "spilling his seed," which is often taken as divine condemnation of coitus interruptus. The first of these examples is normally rebutted by demonstrating that ...