Deuteronomy 29:2-6

And Moses called unto all Israel, and said unto them, Ye have seen all that Jehovah did before your eyes in the land of Egypt unto Pharaoh, and unto all his servants, and unto all his land; the great trials which thine eyes saw, the signs, and those great wonders: but Jehovah hath not given you a heart to know, and eyes to see, and ears to hear, unto this day. And I have led you forty years in the wilderness: your clothes are not waxed old upon you, and thy shoe is not waxed old upon thy foot. Ye have not eaten bread, neither have ye drunk wine or strong drink; that ye may know that I am Jehovah your God.