1 Samuel 17:8-9

8He stood and shouted to the Israelite battle formations, “Why do you come out to line up in battle formation?” He asked them, “Am I not a Philistine and are you not servants of Saul? Choose one of your men and have him come down against me.

9If he wins in a fight against me and kills me, we will be your servants. But if I win against him and kill him, then you will be our servants and serve us.”