When the Israelites saw it, they asked each other, “What is this?” because they didn’t know what it was. Moses said to them, “It’s the food the Lord has given you to eat.
Moses said, “This is what the Lord has commanded: Take two quarts of manna to be kept for your descendants. This way they will see the food that I gave you to eat in the desert when I brought you out of Egypt.”
He was the one who fed you in the desert with manna, which your ancestors had never seen. He did this in order to humble you and test you. But he also did this so that things would go well for you in the end.
So he made you suffer from hunger and then fed you with manna, which neither you nor your ancestors had seen before. He did this to teach you that a person cannot live on bread alone but on every word that the Lord speaks.