1 Samuel 17:34, 35, 37

But David persisted. “I have been taking care of my father’s sheep and goats,” he said. “When a lion or a bear comes to steal a lamb from the flock,  I go after it with a club and rescue the lamb from its mouth. If the animal turns on me, I catch it by the jaw and club it to death.  The L ord  who rescued me from the claws of the lion and the bear will rescue me from this Philistine!” Saul finally consented. “All right, go ahead,” he said. “And may the L ord  be with you!” (1 Samuel 17:34, 35, 37 NLT)