Exodus 16:4-6

King James Version

⁴ Then said the Lord unto Moses, Behold, I will rain bread from heaven for you; and the people shall go out and gather a certain rate every day, that I may prove them, whether they will walk in my law, or no.

⁵ And it shall come to pass, that on the sixth day they shall prepare that which they bring in; and it shall be twice as much as they gather daily.

⁶ And Moses and Aaron said unto all the children of Israel, At even, then ye shall know that the Lord hath brought you out from the land of Egypt: