“And the king went forth, and all his household after him. And the king left ten women, which were concubines, to keep the house.”
King James Version (KJV)
15:16 After him - Or, on foot, which the king chose to do, to humble himself under the hand of God; to encourage his companions in this hard and comfortless march; and to move compassion in his people towards him. Concubines - For he supposed that their sex would protect them, and their relation to David would gain them some respect, or at least, safety from his son.