Bible Verses About War: The contest of saints with the enemies of their salvation

and I behold another law in my members, warring against the law of my mind, and bringing me into captivity to the law of the sin that is in my members.

for walking in the flesh, not according to the flesh do we war,

because we have not the wrestling with blood and flesh, but with the principalities, with the authorities, with the world-rulers of the darkness of this age, with the spiritual things of the evil in the heavenly places;

This charge I commit to thee, child Timotheus, according to the prophesies that went before upon thee, that thou mayest war in them the good warfare,