Exodus 16:16-20

"This is the thing which Jehovah hath commanded. Gather ye of it every man according to his eating; an omer a head, according to the number of your persons, ye shall take it, every man for them that are in his tent. And the children of Israel did so, and gathered some more, some less. And when they measured it with an omer, he that gathered much had nothing over, and he that gathered little had no lack; they gathered every man according to his eating. And Moses said unto them, Let no man leave of it till the morning. Notwithstanding they hearkened not unto Moses; but some of them left of it till the morning, and it bred worms, and became foul: and Moses was wroth with them."

The injunction here was addressed to the problem of greed and hoarding, and the wonder that each had exactly enough whether he gathered much or little was used by the apostle Paul as an incentive to Christian giving (See 2 Corinthians 8:14). He also added that Christian liberality is commanded and that such is God's way of "proving Christians" (2 Corinthians 9:13).

"An omer a head ..." Although not a matter of world-shaking importance, it is amazing that scholars describe this measure variously as "seven pints,"[19] "just over two liters,"[20] "approximately four pints"[21] "six and 1/2 pints,"[22] and "six half-pints."[23]

"And Moses was wroth with them ..." It is amazing that the people had so little trust in God that they violated His laws with impunity, and such an attitude on the part of many in Israel was enough to have kindled the anger of any righteous man. Nevertheless, Moses loved them, and later, he actually offered his life as a sacrifice to save them, an offer which God declined to accept.