You have not eaten bread, and you have not drunk wine or strong drink, that you may know that I am the LORD your God.
Now that Moses had largely repeated the commands which the people were to observe as their part of the covenant, and the promises and threatenings which God would make good (according as they behaved themselves) as part of the covenant, the whole is here summed up in a federal transaction.
Commenting on Deuteronomy 29:1-9
Ye have not eaten bread,.... Bread made of corn, common bread, of their own preparing, made by the labour of their own hands; but manna, the food of angelS, the bread of heaven: neither have you drank wine, nor strong drink; only water out of the rock, at least chiefly, and for constancy; though it may be, when they were on the borders of other...
Ye have not eaten bread, neither have ye drunk wine or strong drink: that ye might know that I [am] the LORD your God. (e) Made by man's art, but manna, which is called the bread of angels.