'Third' in the Bible

On the third day a man arrived from the camp of Saul with his clothes torn and dirt on his head. When he approached David, the man threw himself to the ground.

His second son was Kileab, born to Abigail the widow of Nabal the Carmelite. His third son was Absalom, the son of Maacah daughter of King Talmai of Geshur.

He defeated the Moabites. He made them lie on the ground and then used a rope to measure them off. He put two-thirds of them to death and spared the other third. The Moabites became David's subjects and brought tribute.

David then sent out the army -- a third under the leadership of Joab, a third under the leadership of Joab's brother Abishai son of Zeruiah, and a third under the leadership of Ittai the Gittite. The king said to the troops, "I too will indeed march out with you."