2 Samuel 18:2

And David sent out the army , one third under the command of Joab , one third under the command of Abishai the son of Zeruiah , Joab’s brother , and one third under the command of Ittai the Gittite . And the king said to the men , I myself will also go out with you.

David sent out his troops, a third under the command of Joab, a third under Joab`s brother Abishai son of Zeruiah, and a third under Ittai the Gittite. The king told the troops, “I myself will surely march out with you.”

And David sent forth a third part of the people 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.