Exodus 16:4

4 Then the Lord said to Moses, "I am going to rain bread from heaven for you, and each day the people shall go out and gather enough for that day. In that way I will test them, whether they will follow my instruction or not.

Exodus 16:4 In-Context

2 The whole congregation of the Israelites complained against Moses and Aaron in the wilderness.
3 The Israelites said to them, "If only we had died by the hand of the Lord in the land of Egypt, when we sat by the fleshpots and ate our fill of bread; for you have brought us out into this wilderness to kill this whole assembly with hunger."
4 Then the Lord said to Moses, "I am going to rain bread from heaven for you, and each day the people shall go out and gather enough for that day. In that way I will test them, whether they will follow my instruction or not.
5 On the sixth day, when they prepare what they bring in, it will be twice as much as they gather on other days."
6 So Moses and Aaron said to all the Israelites, "In the evening you shall know that it was the Lord who brought you out of the land of Egypt,
New Revised Standard Version Bible, copyright 1989, Division of Christian Education of the National Council of the Churches of Christ in the United States of America. Used by permission. All rights reserved.