What does 2 Kings 3:21 mean?

Now when all the Moabites heard that the kings were come up to fight against them, they gathered themselves together, all that were able to put on armor, and upward, and stood on 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.

Now when all the Moabites heard that the kings were come up to fight against them, they gathered themselves together, all that were able to put on armor, and upward, and stood on the border.

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.

and all Moab have heard that the kings have come up to fight against them, and they are called together, from every one girding on a girdle and upward, and they stand by the border.

And all the Moabites hearing that the kings were come up to fight against them, gathered together all that were girded with a belt upon them, and stood in the borders.

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