1 Samuel 17:45-49
45 Then said David to the Philistine, Thou comest to me with a sword, and with a spear, and with a shield: but I come to thee in the name of the Lord of hosts, the God of the armies of Israel, whom thou hast defied.
46 This day will the Lord deliver thee into mine hand; and I will smite thee, and take thine head from thee; and I will give the carcases of the host of the Philistines this day unto the fowls of the air, and to the wild beasts of the earth; that all the earth may know that there is a God in Israel.
47 And all this assembly shall know that the Lord saveth not with sword and spear: for the battle is the Lord’s, and he will give you into our hands.
48 And it came to pass, when the Philistine arose, and came, and drew nigh to meet David, that David hastened, and ran toward the army to meet the Philistine.
49 And David put his hand in his bag, and took thence a stone, and slang it, and smote the Philistine in his forehead, that the stone sunk into his forehead; and he fell upon his face to the earth.
-David was confident in victory because He knew the Lord fought for him. When Goliath began his attack with sword and spear, David led with a stone. David slung the stone that toppled Goliath; but instead of thinking that David attacked Goliath with a stone, consider that as David ran for Goliath, he was making sure the stone got there first. Because that stone made it to Goliath first, David’s victory was easy. Conversely, if David had made it to Goliath without the stone, he would have had a real fight on his hands. Ephesians 2:20 tells us that “Jesus Christ himself [is] the chief corner stone” for believers and He is more than able to handle any problem that comes into our lives. But just as was the case with David, when it’s time to face our trials head on, it’s important that we never get ahead of God. If we ever face our troubles and the Lord our Rock (Psalm 118:2) hasn’t gotten there first, victory is never guaranteed.