Ephesians 6:17 in the King James Version
And take the helmet of salvation, and the sword of the Spirit, which is the word of God:
Context
16 above all, taking up the shield of faith, with which you will be able to quench all the fiery darts of the evil one.
17 And take the helmet of salvation, and the sword of the Spirit, which is the word of God;
18 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.