Moses
Exodus 16:18BSB·traditional attribution

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.

Matthew Henry Presbyterian @wholebiblehenry

Now they begin to be provided for by the immediate hand of God. I. He makes them a feast, at night, of delicate fowl, feathered fowl (Psa 78:27), therefore not locusts, as some think; quails, or pheasants, or some wild fowl, came up, and covered the camp, so tame that they might take up as many of them as they pleased.

Commenting on Exodus 16:13-21

John Gill Reformed Baptist @doctorgill

And Moses said unto them,.... At the same time he gave the direction to them about gathering it, and measuring out to every man an omer: let no man leave of it until the morning; not that every man was bound to eat up the quantity distributed to him; he might give what he could not eat to those that could eat more, if there...

Geneva Bible Notes Reformed @genevanotes

And when they did mete [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. (h) God richly feeds everyone, and no one can justly complain.