Deuteronomy 29:2-6

Moses summoned all the Israelites and said to them: Your eyes have seen all that the LORD did in Egypt to Pharaoh, to all his officials and to all his land. With your own eyes you saw those great trials, those signs and great wonders. But to this day the LORD has not given you a mind that understands or eyes that see or ears that hear. Yet the LORD says, “During the forty years that I led you through the wilderness, your clothes did not wear out, nor did the sandals on your feet. You ate no bread and drank no wine or other fermented drink. I did this so that you might know that I am the LORD your God.”