1 Chronicles 12:19

There withdrew also to David some from Manasses, when the Philistines came against Saul to battle. He indeed did not assist them, for in a council of war held by the generals of the Philistines, they said, With the heads of these men he will return to his master Saul.

And the Spirit came upon Amasai, a captain of the thirty, and he said, Go, David, son of Jesse, thou and thy people, peace, peace be to thee, and peace to thy helpers, for thy God has helped thee. And David received them, and made them captains of the forces.