When David came down to visit his brothers on the front lines facing the Philistine army, he found the army of Israel cowering because of the Philistine giant, but he himself defied and mocked the giant’s threat, saying “Who is this uncircumcised Philistine that he defies the armies of the living God?” 

When David was brought to Saul and the king expressed no faith in David’s stature or ability to defeat the giant, David retorted with testimonies of previous victories over bear and lion. When it came time for David to face Goliath, he rejected the weaponry that King Saul placed upon him, relying upon how he had been trained and weaponized by God.  When the giant calling upon his gods, and mockingly labelled David a “boy with a stick”, David follied the giant’s words with his own label of “minced meat”, calling upon the Lord of Hosts, the God of the armies of Israel.

David knew his victory would not come by sword or javelin, not even by his familiar sling and stone, but in the Name of the Lord.  This was his confidence, that God himself was with him to give him victory over death and the enemies of God.

There are the weapons of our spiritual warfare that we as Christians are armed with, but it is not even prayer or the sword of the Spirit through which we gain our victories, but by the Lord Himself. Our greatest weapon is our confidence in Him.