2 Kings 3:21

Now all Moab, hearing that the kings had come to make war against them, got together all who were able to take up arms and went forward to the edge of the country.

1 Kings 20:11

And the king of Israel said in answer, Say to him, The time for loud talk is not when a man is putting on his arms, but when he is taking them off.

Ephesians 6:14

Take your place, then, having your body clothed with the true word, and having put on the breastplate of righteousness;

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
And the king of Israel said in answer, Say to him, The time for loud talk is not when a man is putting on his arms, but when he is taking them off.
Ephesians 6:14
Take your place, then, having your body clothed with the true word, and having put on the breastplate of righteousness;

Basic English, produced by Mr C. K. Ogden of the Orthological Institute - public domain