Dr. Peale introduced himself and was invited in. Christ's love is for keeps, whatever comes. The resurrection offers us a hope of not struggling against sin anymore. B. Daily Dynamic I Jn. One cannot afford to be on the battlefield without a proper helmet.
Salvation is our helmet - protects our minds from despair, fear, guilt, hopelessness, etc.
A clear head is required in battle and only a soldier with a proper helmet had any security.