And the Lord said unto Joshua, get thee up
From the ground where he lay prostrate, with his face to it: this he said, not as refusing his supplication to him, but rather as encouraging and strengthening him; though chiefly he said this in order to instruct him, and that he might prepare for what he was to do:
wherefore liest thou thus upon thy face?
in this manner, so distressed and dejected; or for this thing, as the Targum, for this defeat of the army; something else is to be done besides prayer and supplication.