Wisdom of Solomon 5:17
16 Therefore they will receive a glorious crown and a beautiful diadem from the hand of the Lord, because with his right hand he will cover them, and with his arm he will shield them. 17 The Lord will take his zeal as his whole armor, and will arm all creation to repel his enemies; 18 he will put on righteousness as a breastplate, and wear impartial justice as a helmet; 19 he will take holiness as an invincible shield, 20 and sharpen stern wrath for a sword, and creation will join with him to fight against his frenzied foes. 21 Shafts of lightning will fly with true aim, and will leap from the clouds to the target, as from a well-drawn bow, 22 and hailstones full of wrath will be hurled as from a catapult; the water of the sea will rage against them, and rivers will relentlessly overwhelm them;
Ephesians 6:13
12 For our struggle is not against flesh and blood, but against the rulers, against the powers, against the world rulers of this darkness, against the spiritual forces of evil in the heavens. 13 For this reason, take up the full armor of God so that you may be able to stand your ground on the evil day, and having done everything, to stand. 14 Stand firm therefore, by fastening the belt of truth around your waist, by putting on the breastplate of righteousness, 15 by fitting your feet with the preparation that comes from the good news of peace, 16 and in all of this, by taking up the shield of faith with which you can extinguish all the flaming arrows 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 every prayer and petition, pray at all times in the Spirit, and to this end be alert, with all perseverance and petitions for all the saints.
Notes and References
"... If we closely examine Ephesians 6:10–17 we discover definite echoes of Isaiah 59 LXX, for instance in 6:11 the command to put on the full armor of God and in 6:14 the sentence “having girded your waist with truth, and having put on the breastplate of righteousness” and in 6:17 the phrase about taking up “the helmet of salvation,” all of which echoes Isaiah 59:17–18 in the LXX which in turn echoes Isaiah 11:5 LXX “will have girded his waist with righteousness and wrapped his sides in truth.” ... But Paul is not just drawing on Isaiah, he is drawing on the use of the Isaianic material in Wisdom of Solomon 5:17–20 ... Notice that in this passage both the people of God, who are given a crown and a diadem, and the Lord are clothed in royal imagery and in the case of the Lord, battle regalia. As Thielman says, Paul is closer to this passage from the Wisdom of Solomon in his use of the term “whole armor” and in the inclusion of the shield and the sword ..."
Witherington, Ben Isaiah Old and New: Exegesis, Intertextuality, and Hermeneutics (p. 304) Fortress Press, 2017