For the appeal we make does not spring from error or impure motives, nor are we trying to trick you. On the contrary, we speak as men approved by God to be entrusted with the gospel. We are not trying to please men but God, who tests our hearts. You know we never used flattery, nor did we put on a mask to cover up greed - God is our witness.
1 Thessalonians 2:3-5
Put on the full armor of God, so that you will be able to stand firm against the schemes of the devil. For our struggle is not against flesh and blood, but against the rulers, against the powers, against the world forces of this darkness, against the spiritual forces of wickedness in the heavenly places.
Ephesians 6:11-12