2 Kings 3:21

All Moab had heard that the kings had come up to fight against them. So all who could bear arms, from the youngest to the oldest, were summoned and took their stand at the border.

1 Kings 20:11

The king of Israel answered, “Say this: ‘Don’t let the one who puts on his armor boast like the one who takes it off.’”

Ephesians 6:14

Stand, therefore,

with truth like a belt around your waist,
righteousness like armor on your chest,

Treasury of Scripture Knowledge

Summary

And when all the Moabites heard that the kings were come up to fight against them, they gathered all that were able to put on armour, and upward, and stood in the border.

Bible References

Put on armour

1 Kings 20:11
The king of Israel answered, “Say this: ‘Don’t let the one who puts on his armor boast like the one who takes it off.’”
Ephesians 6:14
Stand, therefore,

with truth like a belt around your waist,
righteousness like armor on your chest,

Holman Christian Standard Bible®, Copyright © 1999, 2000, 2002, 2003, 2009 by Holman Bible Publishers.