Moses said unto Pharaoh, Glory over me. Probably a phrase of ordinary courtesy, meaning—"I submit to thy will have the honour of my submission." When shall I intreat? Literally "For when"—i.e; "for what date shall I make my prayer to God?"
And so Pharaoh's answer is not "To-morrow," as in the Authorised Version, but "For tomorrow." Thy houses. It would seem that the frogs had invaded more than one palace of the Pharaoh. He had perhaps quitted Tanis, and gone to Memphis, when the plague came; but the frogs pursued him there.