9Moses said to Joshua, Choose some of our men and go out to fight the Amalekites. Tomorrow I will stand on top of the hill with the staff of God in my hands. 10So Joshua fought the Amalekites as Moses had ordered, and Moses, Aaron and Hur went to the top of the hill. 11As long as Moses held up his hands, the Israelites were winning, but whenever he lowered his hands, the Amalekites were winning. 12When Moses' hands grew tired, they took a stone and put it under him and he sat on it. Aaron and Hur held his hands up-one on one side, one on the other-so that his hands remained steady till sunset. 13So Joshua overcame the Amalekite army with the sword. 14Then the Lord said to Moses, Write this on a scroll as something to be remembered and make sure that Joshua hears it, because I will completely blot out the name of Amalek from under heaven. 15Moses built an altar and called it The Lord is my Banner. 16He said, Because hands were lifted up against Or [to] the throne of the Lord, The meaning of the Hebrew for this clause is uncertain. the Lord will be at war against the Amalekites from generation to generation.

11Put on the full armor of God, so that you can take your stand against the devil's schemes. 12For our struggle is not against flesh and blood, but against the rulers, against the authorities, against the powers of this dark world and against the spiritual forces of evil in the heavenly realms. 13Therefore put on the full armor of God, so that when the day of evil comes, you may be able to stand your ground, and after you have done everything, to stand. 14Stand firm then, with the belt of truth buckled around your waist, with the breastplate of righteousness in place, 15and with your feet fitted with the readiness that comes from the gospel of peace. 16In addition to all this, take up the shield of faith, with which you can extinguish all the flaming arrows of the evil one. 17Take the helmet of salvation and the sword of the Spirit, which is the word of God.

3For though we live in the world, we do not wage war as the world does. 4The weapons we fight with are not the weapons of the world. On the contrary, they have divine power to demolish strongholds. 5We demolish arguments and every pretension that sets itself up against the knowledge of God, and we take captive every thought to make it obedient to Christ.