'Third' in the Bible

On the third day, a man came from the camp from [being with] Saul, with his clothes torn and with dirt on his head. {When he came} to David, he fell to the ground and bowed down.

His second [was] Kileab by Abigail the wife of Nabal the Carmelite; the third [was] Absalom the son of Maacah, [who was] the daughter of Talmai the king of Geshur.

When he defeated Moab, he measured them with the cord, making them lie on the ground. He measured two cords to kill and {the third cord} to let live. So Moab became servants of David, bringing tribute.

David sent forth a third of the troops {under the command of Joab}, and a third {under the command of Abishai}, the brother of Joab, the son of Zeruiah, and the remaining third {under the command of Ittai} the Gittite. And the king said to the troops, "I, even I, {will certainly go out} with you."