Adam Clarke's Commentary on the Bible - Exodus 16:18
He that gathered much had nothing over - Because his gathering was in proportion to the number of persons for whom he had to provide. And some having fewer, others more in family, and the gathering being in proportion to the persons who were to eat of it, therefore he that gathered much had nothing over, and he that gathered little had no lack. Probably every man gathered as much as he could; and then when brought home and measured by an omer, if he had a surplus, it went to supply the wants... read more
Adam Clarke's Commentary on the Bible - Exodus 16:17
Some more, some less - According to their respective families, an omer for a man; and according to the number of infirm persons whose wants they undertook to supply. read more