1 Kings 9:22
But of the children of Israel did Solomon make no slaves: but they were men of war, and his servants, and his princes, and his captains, and rulers of his chariots, and his horsemen.
Leviticus 25:39
And if your brother that dwells by you becomes poor, and is sold unto you; you shall not compel him to serve as a slave:
1 Samuel 8:11-12
And he said, This will be the manner of the king that shall reign over you: He will take your sons, and appoint them for himself, for his chariots, and to be his horsemen; and some shall run before his chariots.
1 Kings 4:1-27
So king Solomon was king over all Israel.
2 Chronicles 8:9-10
But of the children of Israel Solomon made no slaves for his work; but they were men of war, and chief of his captains, and captains of his chariots and horsemen.