1st Samuel 14:10

7 And his servant said to him, Do whatever is in your mind: see, I am with you in every impulse of your heart.

8 Then Jonathan said, Now we will go over to these men and let them see us.

9 If they say to us, Keep quiet where you are till we come to you; then we will keep our places and not go up to them.

10 But if they say, Come up to us; then we will go up, for the Lord has given them into our hands: and this will be the sign to us.

11 And they let the Philistine force see the two of them: and the Philistines said, Look! the Hebrews are coming out of the holes where they have taken cover.

12 And the armed men of the force gave Jonathan and his servant their answer, saying, Come up here to us, and we will let you see something. Then Jonathan said to his servant, Come up after me: for the Lord has given them up into the hands of Israel.

13 And Jonathan went up, gripping with his hands and his feet, his servant going up after him; and the Philistines gave way before Jonathan when he made an attack on them, and his servant put them to death after him.