Now there were men lying in wait, abiding with her in the chamber. And she said unto him, The Philistines be upon thee, Samson. And he brake the withs, as a thread of tow is broken when it toucheth the fire. So his strength was not known.
Now there were hidden men ready in the room with her. She warned Samson, saying, "The Philistines are attacking you!" So, Samson broke the ropes like a piece of thread burning in fire. But nobody knew how strong he really was.