The lord knows that the adversary would try to fight us with the systems of this world . but he charged us to resist him, steadfast in the faith . this is what the fight of faith is about and he didn't leave us without the weapon for the fight.

When David confronted Goliath he said .. 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... (1samuel 17:45 that was his weapon , the name of the Lord of hosts. With that name , he overcame the philistines.