Isaiah 59:17, Ephesians 6:17, 1 Thessalonians 5:8: I had a hard time with the idea that Salvation protects your mind. To me it always seemed a matter of the heart. So why doesn’t Salvation protect your heart? Well it does protect your heart but in this matter, the heart and the mind go together. You have to know something in your mind before you feel it in your heart. Also, Salvation is something that you have to practice daily. It is forever, John 10:28-30. Once you belong to Jesus, no one can snatch you from his hands. There is of course the unforgivable sin. That is blasphemy of the Holy Spirit, which is completely and utterly turning your back on God. I mean doing as Satan did which is believing that you are better than God is, that you don’t need God. So you can turn away from the ways of God and still be saved. What I mean is you can go back to your sinful ways, but there is still Salvation. You can take that walk back to God. It is a door that is always open for you. To put on the Helmet of Salvation is a daily process because we can be easily tempted. In other words, you have to remember every day that you are a child of God, that you belong to HIM. We protect out mind by focusing on the fact that we are Children of the One true King. The Roman helmet was sort of Storm Trooper helmet without the technology and since they did not have bullets, it may or may not have protected against one. Since Satan’s attacks can be vicious, we need something tough to protect our mind. That is why we have the word of God. As we learn the word, it is more difficult for Satan to try to pull you away.
Isaiah: He put on righteousness as his breastplate, and the helmet of salvation on his head; he put on the garments of vengeance and wrapped himself in zeal as in a cloak.
Ephesians: Take the helmet of salvation and the sword of the Spirit, which is the word of God.
1 Thessalonians : But since we belong to the day, let us be sober, putting on faith, and love as a breastplate, and the hope of salvation as a helmet.