'Helmet' in the Bible

He had a bronze helmet on his head, and wore a coat of scale-armor (overlapping metal plates) which weighed 5,000 shekels of bronze.

Then Saul dressed David in his garments and put a bronze helmet on his head, and put a coat of mail (armor) on him.

“Gilead is Mine, and Manasseh is Mine;Ephraim is My helmet;Judah is My scepter.

For He [the Lord] put on righteousness like a coat of armor,And salvation like a helmet on His head;He put on garments of vengeance for clothingAnd covered Himself with zeal [and great love for His people] as a cloak.

They will come against you with weapons, chariots, and wagons, and with a company of people (infantry) who will array themselves against you on every side with large shield and small, and helmet; and I will commit the judgment and the punishment to them, and they will judge and punish you in accordance with their [pagan] customs.

“Persia and Lud and Put (Libya) were in your army as your men of war. They hung the shield and the helmet on you; they gave you splendor.

Persia (Iran), Cush (Ethiopia), and Put (Libya, N. Africa) with them, all of them with shield and helmet;

And take the helmet of salvation, and the sword of the Spirit, which is the Word of God.

But since we [believers] belong to the day, let us be sober, having put on the breastplate of faith and love, and as a helmet, the hope and confident assurance of salvation.