RobH_en_tn/eph/06/17.md

And take the helmet of salvation

Salvation given by God protects the believer's mind just as a helmet protects the head of a soldier. (See: rc://en/ta/man/translate/figs-metaphor)

the sword of the Spirit, which is the word of God

The word of God, inspired by the Holy Spirit, is to be used to fight against and defend the believer from the devil just as a soldier uses his sword to fight and defend against enemy attacks. (See: rc://en/ta/man/translate/figs-metaphor)

through every prayer and request praying at all times in the Spirit

AT: "Pray at all times in the Spirit as you pray and make specific requests"

with all perseverance and prayer for all those set apart for God

AT: "with constant alertness and prayer for all the believers"