At that time. — Apparently in the first surprise of the Moabite forces and garrisons.
All lusty. — Literally, every fat man and every soldier of strength, the word being the same as that used in Judges 3:17 to describe the fatness of Eglon. The choice of the word seems to be dictated by a certain grim sense of humour. “The narrative ends, as it had begun, with its half-humorous allusion to the well-fed carcases of those who, corpulent like their chief, lay dead along the shore of the river.” (Stanley.)