Ephesians 6:19

above all, taking up the shield of faith, with which you will be able to quench all the fiery darts of the evil one.

And take the helmet of salvation, and the sword of the Spirit, which is the word of God;

with all prayer and requests, praying at all times in the Spirit, and being watchful to this end in all perseverance and requests for all the saints.

for which I am an ambassador in chains; that in it I may speak boldly, as I ought to speak.

But that you also may know my affairs, how I am doing, Tychicus, the beloved brother and faithful servant in the Lord, will make known to you all things.

I have sent him to you for this very purpose, that you may know our state and that he may comfort your hearts.