Well it must be said that Onan the son of Judah did not masturbate itself. He did coitus interruptus to Er, widow of his brother. The fact of "spilling the see

Well it must be said that Onan the son of Judah did not masturbate itself. He did coitus interruptus to Er, widow of his brother. The fact of "spilling the seed" was later interpreted as the sin by some christian churches, but there are other interpretations.