Exodus 16:16
This is the thing which Jehovah has commanded: Gather of it every man according to what he can eat, an omer a poll, according to the number of your persons: ye shall take every man for those that are in his tent.
Exodus 16:36
Now an omer is the tenth part of an ephah.
Exodus 16:18
And they measured with the omer: then he that gathered much had nothing over, and he that gathered little wanted nothing: they had gathered every man according to the measure of 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; that they may see the bread that I gave you to eat in the wilderness, when I brought you out of the land of Egypt.