Judges 15:11-12

Then three thousand men of Judah went down to the cleft of the rock of Etam, and said to Samson, “Do you not know that the Philistines rule over us? What is this you have done to us?” And he said to them, “As they did to me, so I have done to them.” But they said to him, “We have come down to arrest you, that we may deliver you into the hand of the Philistines.” Then Samson said to them, “Swear to me that you will not kill me yourselves.”