We are commanded to arm ourselves with the same mindset and attitude of Christ. He had the entire host of heaven at His disposal yet never lifted a finger in His own defense! He threw the moneychangers out of the Temple, not because they were threatening Him, but because they were desecrating His Father's house. When it came to His own security, He always chose to remove Himself from the situation—until His earthly ministry was over, when He humbly submitted to the most unfair treatment that has ever been imposed on a human being.
Paul tells us in Ephesians 6:10 to "be strong in the Lord and in the power of His might." In the next several verses, He shows that we are involved in a war, one in which no sword, gun, or any other human weapon can help us. Our battles are spiritual battles, and even when those battles involve human instruments, our articles of defense are still spiritual: truth, righteousness, the gospel of peace, faith, salvation, and of course, the "sword" of the Spirit—the Word of God (verses 14-17). This is the sword that we should carry with us constantly and look to for defense.
David C. Grabbe
Living By the Sword
Looking at these scriptures in the light of I Peter 5:6-8, and understanding that Peter is writing with his thoughts on Satan in the background, our feelings are especially vulnerable because it is natural for us to feel that we are being taken advantage of or not being treated as we should be, and our emotions begin to run wild. Such a situation is tailor-made for Satan. He himself fell prey to such a circumstance. Either he will try to move us in that direction, or if it begins to happen even without him, then he will take advantage of it and move to affect our emotions even more.
John W. Ritenbaugh
Satan (Part 4)
The apostle is speaking about the efficacy of Christ's suffering and death in making possible a relationship between God and human beings. His conclusion, beginning in I Peter 4:1-2, is that, since Christ suffered so much to bring this about, Christians should respond by "ceas[ing] from sin" and living "for the will of God."
This means, of course, that in doing so, we no longer live as we used to, like the "Gentiles," like the world (verse 3). Seeing this, our friends who are still in the world wonder why our lives have changed so drastically, and they are likely to malign us for it (verse 4). But we need not worry because God, the just Judge, will bring them into account for their abuses of us (verse 5). In verse 6, he winds up his discussion by providing a general example to give us hope in this regard. He explains that the gospel had been preached in the past to people who are now dead, and even though their contemporaries may have judged them worthy to suffer persecution and death, God, conversely, has judged them worthy of eternal life. He implies that God would do the same for us.
Richard T. Ritenbaugh
Jesus and 'the Spirits in Prison'