@EvilKiru@Mabande@Jyoti They figure you should be saving your seed for procreation. Every time you're wasting it you could have been making little Christians instead.
It's stupid, even evil, but not difficult to interpret.
@EvilKiru@Jyoti It's wild that what they took from the misinterpretation of the story is "you shouldn't masturbate" and not that 'you shouldn't masturbate _in front of other people_".
@Jyoti While Onan spilling his seed upon the ground is likely a fairly accurate translation from the original, it obviously refers to pulling out, not masturbating in front of his brother's widow.