Read Ephesians 6:13-14  

Then after the battle you will still be standing firm. Ephesians 6:13b (NLT)

Armor enables us to resist the attacks of the evil one. Our task is to stand firm, trusting in God’s promised protection so that we are still standing when the attack is over. Satan will attempt to confront us with our sin and condemn us. But as we are in Christ, God sees His righteousness when he looks at us. So all we have to do is remember Christ’s sacrifice and His call on our lives, confess our sins when we fall short of Christ’s call, and trust in God’s truth and salvation.