10 A final word: Be strong in the Lord and in his mighty power. 11 Put on all of God’s armor so that you will be able to stand firm against all strategies of the devil. 12 For we are not fighting against flesh-and-blood enemies, but against evil rulers and authorities of the unseen world, against mighty powers in this dark world, and against evil spirits in the heavenly places. 13 Therefore, put on every piece of God’s armor so you will be able to resist the enemy in the time of evil. Then after the battle you will still be standing firm. 14 Stand your ground, putting on the belt of truth and the body armor of God’s righteousness. 15 For shoes, put on the peace that comes from the Good News so that you will be fully prepared. 16 In addition to all of these, hold up the shield of faith to stop the fiery arrows of the devil. 17 Put on salvation as your helmet, and take the sword of the Spirit, which is the word of God. 18 Pray in the Spirit at all times and on every occasion. Stay alert and be persistent in your prayers for all believers everywhere. Ephesians 6:10-18 NLT
Ephesians 6:12: The conflict with Satan is spiritual, and therefore no tangible weapons are effective against him and his minions. There is no list of specific tactics Satan will use, however, the passage is clear that when we follow all the instructions faithfully, we will be able to stand, and we will have victory regardless of Satan’s strategy.
The Belt of Truth (verse 14): Satan is the “father of lies” (John 8:44). Deception is high on the list of things God considers to be an abomination, describing a “lying tongue” as detestable (Proverbs 6:16-17). We are exhorted to put on truth for our own sanctification and deliverance, as well as for the benefit of those to whom we witness.
The Breastplate of Righteousness (verse 14): A breastplate shields a warrior’s vital organs from blows that would otherwise be fatal. This righteousness is not works of righteousness done by men, but the righteousness of Christ, imputed by God and received by faith, which guards our hearts against the accusations and charges of Satan and secures our innermost being from his attacks.
Shoes of The Gospel of Peace (verse 15): In warfare, sometimes an enemy places dangerous obstacles in the path of advancing soldiers. The idea of the preparation of the feet with the gospel of peace as footwear suggests what we need to advance into Satan’s territory, aware that there will be traps, with the message of grace so essential to winning souls to Christ. Satan has many obstacles placed in the path to halt the propagation of the gospel.
The Shield of Faith (verse 16): The shield makes Satan’s sowing of doubt about the faithfulness of God and His Word ineffective. Our faith—of which Christ is “the author and perfecter” (Hebrews 12:2)— is like a golden shield, precious, solid, and substantial.
The Helmet of Salvation (verse 17): The helmet of salvation is protection for the head, keeping viable a critical part of the body. We could say that our way of thinking needs preservation. The head is the seat of the mind, which, when it has laid hold of the sure gospel hope of eternal life, will not receive false doctrine or give way to Satan’s temptations. The unsaved person has no hope of warding off the blows of false doctrine because he is without the helmet of salvation and his mind is incapable of discerning between spiritual truth and spiritual deception.
The Sword of The Spirit (Verse 17): The sword of the Spirit is the Word of God. While all the other pieces of spiritual armor are defensive in nature, the sword of the Spirit is the only offensive weapon in the armor of God. It speaks of the holiness and power of the Word of God. A greater spiritual weapon is not conceivable. In Jesus’ temptations in the desert, the Word of God was always His overpowering response to Satan. What a blessing that the same Word is available to us!
Once we have on the full armor we are told to pray (v 18) in the Spirit (that is, with the mind of Christ, with His heart and His priorities) in addition to wearing the full armor of God. We cannot neglect prayer, as it is the means by which we draw spiritual strength from God. Without prayer, without reliance upon God, our efforts at spiritual warfare are empty and futile. The full armor of God—truth, righteousness, the gospel, faith, salvation, the Word of God, and prayer—are the tools God has given us, through which we can be spiritually victorious, overcoming Satan’s attacks and temptations.