1 Samuel 17:32-36

32David said to Saul, “Don’t let anyone be discouraged by him; your servant will go and fight this Philistine!”

33But Saul replied, “You can’t go fight this Philistine. You’re just a youth, and he’s been a warrior since he was young.”

34David answered Saul, “Your servant has been tending his father’s sheep. Whenever a lion or a bear came and carried off a lamb from the flock,

35I went after it, struck it down, and rescued the lamb from its mouth. If it reared up against me, I would grab it by its fur, strike it down, and kill it.

36Your servant has killed lions and bears; this uncircumcised Philistine will be like one of them, for he has defied the armies of the living God.”