1 Chronicles 12:20 (KJV)

Then the spirit came upon Amasai, who was chief of the captains, and he said, Thine are we, David, and on thy side, thou son of Jesse: peace, peace be unto thee, and peace be to thine helpers; for thy God helpeth thee. Then David received them, and made them captains of the band.

And there fell some of Manasseh to David, when he came with the Philistines against Saul to battle: but they helped them not: for the lords of the Philistines upon advisement sent him away, saying, He will fall to his master Saul to the jeopardy of our heads.

As he went to Ziklag, there fell to him of Manasseh, Adnah, and Jozabad, and Jediael, and Michael, and Jozabad, and Elihu, and Zilthai, captains of the thousands that were of Manasseh.

And they helped David against the band of the rovers: for they were all mighty men of valour, and were captains in the host.

For at that time day by day there came to David to help him, until it was a great host, like the host of God.