Exodus 16:4

16:4 Then the Lord said to Moses, “I am going to rain bread from heaven for you, and the people will go out and gather the amount for each day, so that I may test them. Will they will walk in my law or not?

Exodus 16:8

16:8 Moses said, “You will know this when the Lord gives you meat to eat in the evening and bread in the morning to satisfy you, because the Lord has heard your murmurings that you are murmuring against him. As for us, what are we? Your murmurings are not against us, but against the Lord.”

Psalms 78:23

78:23 He gave a command to the clouds above,

and opened the doors in the sky.