2 Kings 3:21
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. 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.
When the Moabites heard that the kings had come up to fight against them, they gathered all who were able to put on armor and upward and stood in the border. The verse belongs to an account that presents a test of faith, a trial in which God's people faced apparent impossibility. In the battle the verse sets up, victory was not turned by human strength and did not depend on it, but came by God's power.
Its setting therefore teaches trust in what God can do rather than in what people can do or in their own ability. That trust includes what God can do through His people.
It warns that believers may be tested and tempted in similar ways. God may work in unexpected ways that cannot be planned or predicted and that they do not expect. He has means for every emergency, so His power must not be limited.