Exodus 16:19 - Joseph Benson’s Commentary on the Old and New Testaments

Let no man leave of it till the morning For the provision of the next day, as distrusting God's care and goodness in giving him more. Not that every one was bound to eat the whole of what he had gathered; but they were to dissolve or burn it, as they did the remains of some sacrifices, or to consume it some other way. Thus, they were to learn to go to bed quietly, though they had not a bit of bread in their tents, nor in all their camp, trusting God with the following day to bring them their daily bread. Never was there such a market of provisions as this, where so many hundred thousand men were daily furnished without money and without price: never was there such an open house kept as God kept in the wilderness for forty years together, nor such free and plentiful entertainment given. And the same wisdom, power, and goodness that now brought food daily out of the clouds, doth, in the constant course of nature, bring food yearly out of the earth, and gives us all things richly to enjoy.