Blood: (On One's own Head) Guilt

If anyone curses his father or mother, he must be put to death. He has cursed his father or mother; his blood shall be upon him.

For David had said to the Amalekite, “Your blood be on your own head because your own mouth has testified against you, saying, ‘I killed the LORD’s anointed.’”

He engages in usury and takes excess interest. Will this son live? He will not! Since he has committed all these abominations, he will surely die; his blood will be on his own head.