“Blended families” were a problem even in Bible days. David had children by his many wives, and, human nature being what it is, one of the boys fell in lust with his half sister.
David’s scapegrace son Amnon lusted for Tamar, a gentle virgin. A friend suggested to Amnon that he play sick and ask Tamar to comfort him.
Tamar baked him some bread as he requested, but when she brought it to him, he uttered some of the most disgusting words in the Bible: “Come, lie with me, my sister” (2 Sam. 13:11).
Tamar resisted, he raped her, then immediately hated her: “Arise, be gone!” Tamar went into mourning, and her full brother Absalom took her into his home and plotted vengeance on Amnon.
He and some cronies got Amnon drunk, then murdered him. Absalom fled, living in exile for three years. “And King David longed to go to Absalom.”