Your clothes waxed not old See on Deuteronomy 8:4.
Ye have not eaten bread Common bread purchased by your own money, procured by your own labour, or made by your own hands, but heavenly and angelical bread. Neither have ye drunk wine But only water out of the rock, and the water was made both pleasant and refreshing. The meaning is, that they were not nourished by the ordinary means of sustenance, but were constantly supported by a miraculous supply from God, who graciously fed them for a course of years without any labour of their own. That I am the Lord That I am Jehovah, that is, the Being who can bring to pass whatever I will, (see on Exodus 6:3,) omnipotent and all-sufficient to provide for you without the help of any creatures, and your God, in covenant with you, who have a true affection to you, and a fatherly care of you.