this is an inaccurate, out of context reading. the man in question was killed for refusing to provide his brother and his widowed wife with an heir. read the story.

it starts in Gen 38:6. the woman was taken as judah's first son's wife. this son was a bad person, apparently, and god killed him. in hebrew culture, a widow would marry someone in the family of her dead husband to care for her, and if she had no children, the first child of that marriage would be the heir of her first husband. so tamar's second husband refused to impregnate her, giving her a son to care for her, and that's why god killed him, not because he (*)(*)(*)(*)ed on the ground.

i mean. it's probably all crap, but if you're going to cite it, do so correctly.