Bible Verses About Warfare of Saints: With prayer

Fear thou not; for I am with thee: be not dismayed; for I am thy God: I will strengthen thee; yea, I will help thee; yea, I will uphold thee with the right hand of my righteousness.

And he said unto me, My grace is sufficient for thee: for my strength is made perfect in weakness. Most gladly therefore will I rather glory in my infirmities, that the power of Christ may rest upon me.

Watch ye, stand fast in the faith, quit you like men, be strong.

(For the weapons of our warfare are not carnal, but mighty through God to the pulling down of strong holds;)

This charge I commit unto thee, son Timothy, according to the prophecies which went before on thee, that thou by them mightest war a good warfare;