"Then the Philistine said, “This day I defy the armies of Israel! Give me a man and let us fight each other.” 11 On hearing the Philistine’s words, Saul and all the Israelites were dismayed and terrified" (1 Samuel 17:10-11). The Philistine needed to know that he was facing more than the armies of Israel, more than the man they would choose to represent them. He was battling against the Lord! Saul and the Israelitess needed to know that they were not alone in this battle. God was with them!
"David said to the Philistine, “You come against me with sword and spear and javelin, but I come against you in the Name of the Lord Almighty, the God of the armies of Israel, whom you have defied. 46 This day the Lord will deliver you into my hands, and I’ll strike you down and cut off your head. This very day I will give the carcasses of the Philistine army to the birds and the wild animals, and the whole world will know that there is a God in Israel. 47 All those gathered here will know that it is not by sword or spear that the Lord saves; for the battle is the Lord's, and He will give all of you into our hands”" (1 Samuel 17:45-47). What great words of faith David spoke to the Philistine. He was a facing a giant. Goliath, the giant, was convinced that he would defeat David. The possibility of defeat had never even crossed his mind. David, however, was not afraid. He knew that the Lord was with him. He knew that the Lord would give him the victory,