What is putting on the helmet of salvation?

Putting on the helmet of salvation is a metaphor from the Christian faith, specifically from Ephesians 6:17, which describes one of the components of the spiritual armor believers are encouraged to wear. The helmet symbolizes the protection of one's mind and thoughts through the assurance of salvation provided by faith in Jesus Christ. It serves as a reminder of the hope and security that comes from being saved, helping to guard against doubt and despair in spiritual battles. Essentially, it emphasizes the importance of maintaining a confident and secure mindset rooted in one's salvation.