1 Samuel 14:9-11

If they say to us, ‘Wait until we come to you,’ then we will stand still in our place, and we will not go up to them. But if they say, ‘Come up to us,’ then we will go up, for the LORD has given them into our hand. And this shall be the sign to us.” So both of them showed themselves to the garrison of the Philistines. And the Philistines said, “Look, Hebrews are coming out of the holes where they have hidden themselves.”