Ephesians 6:14

Stand your ground, then, with the belt of truth around your waist, and put on uprightness as your coat of mail,

1 Thessalonians 5:8

but we who belong to the day must be composed, wearing faith and love for a coat of mail, and helmeted with the hope of salvation.

Revelation 9:17

And this was how the horses and their riders looked in my vision: Their breast-plates were fire red, dark blue, and yellow. The horses' heads were like lions' heads, and fire, smoke, and sulphur poured from their mouths.

Treasury of Scripture Knowledge

Summary

And these are the garments which they shall make; a breastplate, and an ephod, and a robe, and a broidered coat, a mitre, and a girdle: and they shall make holy garments for Aaron thy brother, and his sons, that he may minister unto me in the priest's office.

Bible References

A breastplate

Ephesians 6:14
Stand your ground, then, with the belt of truth around your waist, and put on uprightness as your coat of mail,
1 Thessalonians 5:8
but we who belong to the day must be composed, wearing faith and love for a coat of mail, and helmeted with the hope of salvation.
Revelation 9:17
And this was how the horses and their riders looked in my vision: Their breast-plates were fire red, dark blue, and yellow. The horses' heads were like lions' heads, and fire, smoke, and sulphur poured from their mouths.