Exodus 16:4; Exodus 16:15; Exodus 16:21

4 Then the LORD said to Moses, "Behold, I will rain bread from heaven for you; and the people shall go out and gather a day's portion every day, that I may test them, whether or not they will walk in My instruction.

15 When the sons of Israel saw it, they said to one another, "What is it?" For they did not know what it was. And Moses said to them, "It is the bread which the LORD has given you to eat.

21 They gathered it morning by morning, every man as much as he should eat; but when the sun grew hot, it would melt.