Exodus 16:15-19

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.

This is what the Lord has commanded: ‘Everyone gather as much as he will eat; you shall take an omer apiece according to the number of people each of you has in his tent.’ ”

The sons of Israel did so, and some gathered much and some little.

When they measured it by the omer, the one who had gathered much did not have too much, and the one who had gathered little did not have too little; everyone gathered as much as he would eat.

Moses said to them, “No one is to leave any of it until morning.”