Charles Ellicott Commentary 2 Chronicles 25:9

"And Amaziah said to the man of God, But what shall we do for the hundred talents which I have given to the army of Israel? And the man of God answered, Jehovah is able to give thee much more than this." — 2 Chronicles 25:9 (ASV)

What shall we do? —Literally, What to do? i.e., What is to be done? What must we do?

The army. — The troop (gĕdûd) of mercenaries.