Exodus 16:16
This is the thing which Jehovah has commanded: Each man gather of it according to his eating, an omer for a head, according to the number of your souls. Each one shall take for those who are in his camp.
Exodus 16:36
And an omer is the tenth part of an ephah.
Exodus 16:18
And when they measured with an omer, he that gathered much had nothing over, and he that gathered little lacked nothing. They gathered each one according to his eating.
Exodus 16:32-33
And Moses said, This is the thing which Jehovah has commanded: Fill an omer of it to be kept for your generations, so that you may see the bread with which I have fed you in the wilderness, when I brought you forth from the land of Egypt.