1 Samuel 17:33-43

33 Sha'ul said to David, "You can't go to fight this P'lishti -you're just a boy, and he has been a warrior from his youth!"
34 David answered Sha'ul, "Your servant used to guard his father's sheep. When a lion or a bear would come and grab a lamb from the flock,
35 I would go after it, hit it, and snatch the lamb from its mouth; and if it turned on me, I would catch it by the jaw, smack it and kill it.
36 Your servant has defeated both lions and bears, and this uncircumcised P'lishti will be like one of them, because he has challenged the armies of the living God."
37 Then David said, "ADONAI, who rescued me from the paw of the lion and from the paw of the bear, will rescue me from the paw of this P'lishti!" Sha'ul said to David, "Go; may ADONAI be with you."
38 Sha'ul dressed David in his own armor - he put a bronze helmet on his head and gave him armor plate to wear.
39 David buckled his sword on his armor and tried to walk, but he wasn't used to such equipment. David said to Sha'ul, "I can't move wearing these things, because I'm not used to them." So David took them off.
40 Then he took his stick in his hand and picked five smooth stones from the riverbed, putting them in his shepherd's bag, in his pouch. Then, with his sling in his hand, he approached the P'lishti.
41 The P'lishti, with his shield-bearer ahead of him, came nearer and nearer to David.
42 The P'lishti looked David up and down and had nothing but scorn for what he saw - a boy with ruddy cheeks, red hair and good looks.
43 The P'lishti said to David, "Am I a dog? Is that why you're coming at me with sticks?"- and the P'lishti cursed David by his god.
Complete Jewish Bible Copyright 1998 by David H. Stern. Published by Jewish New Testament Publications, Inc. All rights reserved. Used by permission.