Exodus 16:7

4 Then the Lord said to Moses, See, I will send down bread from heaven for you; and the people will go out every day and get enough for the day's needs; so that I may put them to the test to see if they will keep my laws or not.

5 And on the sixth day they are to make ready what they get in, and it will be twice as much as they get on the other days.

6 And Moses and Aaron said to all the children of Israel, This evening it will be clear to you that it is the Lord who has taken you out of the land of Egypt:

7 And in the morning you will see the glory of the Lord; for your angry words against the Lord have come to his ears: and what are we that you are crying out against us?

8 And Moses said, The Lord will give you meat for your food at evening, and in the morning bread in full measure; for your outcry against the Lord has come to his ears: for what are we? your outcry is not against us but against the Lord.

9 And Moses said to Aaron, Say to all the people of Israel, Come near before the Lord for he has given ear to your outcry.

10 And while Aaron was talking to the children of Israel, their eyes were turned in the direction of the waste land, and they saw the glory of the Lord shining in the cloud.