Ephesians 6:12-13

6:12 For our struggle is not against flesh and blood, but against the rulers, against the powers, against the world rulers of this darkness, against the spiritual forces of evil in the heavens. 6:13 For this reason, take up the full armor of God so that you may be able to stand your ground on the evil day, and having done everything, to stand.

Ephesians 6:18

6:18 With every prayer and petition, pray at all times in the Spirit, and to this end be alert, with all perseverance and requests for all the saints.