1 Samuel 29:5

And the women sang as they were merry and said, “Saul has struck his thousands, And David his ten thousands.”

But the servants of Achish said to him, “Is this not David the king of the land? Did they not sing of this one as they danced, saying, ‘Saul has struck his thousands, And David his ten thousands’?”

Now from Manasseh also some defected to David when he was about to go to battle with the Philistines against Saul. But they did not help them, for the lords of the Philistines after counsel sent him away, saying, “At the cost of our heads he may defect to his master Saul.”