2 Samuel 18:1-2

American Standard Version

18 And David numbered the people that were with him, and set captains of thousands and captains of hundreds over them. ² And David sent forth the people, a third part under the hand of Joab, and a third part under the hand of Abishai the son of Zeruiah, Joab’s brother, and a third part under the hand of Ittai the Gittite. And the king said unto the people, I will surely go forth with you myself also.