Ephesians 6:10-18: "10 Finally, be strong in the Lord and in the strength of his might. 11 Put on the whole armor of God, that you may be able to stand against the schemes of the devil. 12 For we do not wrestle against flesh and blood, but against the rulers, against the authorities, against the cosmic powers over this present darkness, against the spiritual forces of evil in the heavenly places. 13 Therefore take up the whole armor of God, that you may be able to withstand in the evil day, and having done all, to stand firm. 14 Stand therefore, having fastened on the belt of truth, and having put on the breastplate of righteousness, 15 and, as shoes for your feet, having put on the readiness given by the gospel of peace. 16 In all circumstances take up the shield of faith, with which you can extinguish all the flaming 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 praying at all times in the Spirit, with all prayer and supplication. To that end keep alert with all perseverance, making supplication for all the saints"
1 Corinthians 16:13: "Be watchful, stand firm in the faith, act like men, be strong."
1 Peter 5:8-10: "8 Be sober-minded; be watchful. Your adversary the devil prowls around like a roaring lion, seeking someone to devour. 9 Resist him, firm in your faith, knowing that the same kinds of suffering are being experienced by your brotherhood throughout the world. 10 And after you have suffered a little while, the God of all grace, who has called you to his eternal glory in Christ, will himself restore, confirm, strengthen, and establish you."
1 John 5:4-5: "4 For everyone who has been born of God overcomes the world. And this is the victory that has overcome the world - our faith. 5 Who is it that overcomes the world except the one who believes that Jesus is the Son of God?"
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The passage from Ephesians is the main source for the hymn text.
1 Corinthians 16:13 is incorporated with the shoes of readiness from Ephesians 6:15 at the beginning of the hymn's third verse: "With eagerness shod / Stand firm in your place."
1 Peter 5:8-10 appears at the beginning of the fourth verse: "Though Satan presume / To test you and try."
The victory in 1 John 5:4-5 seems to appear at the end of the fifth verse: "Then in Him victorious / Your armor lay down."
