Here we find Christians - believers who have made commitment to the Lord, but are bound by the enemy. They have allowed the devil to come and ensnare them into his camp. The enemy has a hold on them. The last of the three categories is . . . One who knows his role in the army, and relies on the Captain of the Host to fight his battles for him.
Life is full of battles.
Scripture tells us that. A battle between good and evil. A battle between right and wrong. A battle between walking faith and walking by sight. A battle between righteousness and wickedness.