1st Samuel 17:34

31 When the words were heard which David spoke, they rehearsed them before Saul; and he sent for him.

32 David said to Saul, Let no man`s heart fail because of him; your servant will go and fight with this Philistine.

33 Saul said to David, You are not able to go against this Philistine to fight with him; for you are but a youth, and he a man of war from his youth.

34 David said to Saul, Your servant was keeping his father`s sheep; and when there came a lion, or a bear, and took a lamb out of the flock,

35 I went out after him, and struck him, and delivered it out of his mouth; and when he arose against me, I caught him by his beard, and struck him, and killed him.

36 Your servant struck both the lion and the bear: and this uncircumcised Philistine shall be as one of them, seeing he has defied the armies of the living God.

37 David said, Yahweh who delivered me out of the paw of the lion, and out of the paw of the bear, he will deliver me out of the hand of this Philistine. Saul said to David, Go, and Yahweh shall be with you.