Put on the full armor of God, so that you will be able to stand firm against the schemes of the enemy.
Therefore stand firm, having girded your loins with truth, and having put on the breastplate of righteousness.
And having shod your feet with the preparation of the gospel of peace; in addition to all, taking up the shield of faith and take the helmet of salvation and the sword of the Spirit, which is the word of God. 
With all prayer and petition, pray at all times.
—  Ephesians 6:11-18