Exodus 16:18

18But when they measured it with an omer, awhoever gathered much had nothing left over, and whoever gathered little had no lack. Each of them gathered as much as he could eat.

Exodus 16:33

33And Moses said to Aaron, “Take a bjar, and put an omer of manna in it, and place it before the Lord to be kept throughout your generations.”

Exodus 16:36

36(An omer is cthe tenth part of an ephah.)
An  ephah was about 3/5 bushel or 22 liters


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