Omer

This is what the LORD has commanded: ‘Each one is to gather as much as he needs. You may take an omer for each person in your tent.’”

When they measured it by the omer, he who gathered much had no excess, and he who gathered little had no shortfall. Each one gathered as much as he needed to eat.

Moses said, “This is what the LORD has commanded: ‘Keep an omer of manna for the generations to come, so that they may see the bread I fed you in the wilderness when I brought you out of the land of Egypt.’”

So Moses told Aaron, “Take a jar and fill it with an omer of manna. Then place it before the LORD to be preserved for the generations to come.”

(Now an omer is a tenth of an ephah.)