'Half' in the Bible

Three sons of Zeruiah [the half sister of David] were there: Joab, Abishai, and Asahel. Now Asahel was as light and swift-footed as one of the [wild] gazelles in the field.

So Hanun took David’s servants and shaved off half their beards, and cut off their robes in the middle as far as their hips, and sent them away.

It happened afterwards that Absalom the son of David had a beautiful sister whose name was Tamar, and Amnon [her half brother] the son of David was in love with her.

Amnon was so frustrated because of his [half-] sister Tamar that he made himself sick, for she was a virgin, and Amnon thought it impossible for him to do anything to her.

He said to Amnon, “Why are you, the king’s son, so depressed morning after morning? Will you not tell me?” And Amnon said to him, “I am in love with Tamar, my [half-] brother Absalom’s sister.”

Absalom put Amasa in command of the army instead of Joab. Now Amasa was the son of a man named Ithra the Israelite, who had married Abigail the daughter of Nahash, [the half sister of David and] the sister of Zeruiah, Joab’s mother.

But the men said, “You should not go out [to battle with us]. For if in fact we retreat, they will not care about us; even if half of us die, they will not care about us. But you are worth ten thousand of us. So now it is better that you be ready to help us from the city [of Mahanaim].”

Then the king went on to Gilgal, and Chimham went on with him; and all the people of Judah and also half the people of Israel accompanied the king.