But since we are of the day, let us be sober, having put on the breastplate of faith and love, and as a helmet, the hope of salvation.
1 Thessalonians 5:8 NASB
Interesting the analogy of armor used here. The breastplate protected your most vital organs, your heart and your lungs. While your helmet obviously protects your head. While your heart is beating and you can breathe, you can proclaim His Word. You can share with others the evidence of things unseen. And with your mind protected by the assurance of salvation, knowing that Christ won for us when He got up out that grave, you can proclaim it boldly.