Every morning each one gathered as much as was needed, and when the sun grew hot, it melted away.
God provides not merely what we need but what delights us: quail at evening, then manna at morning, descending with the dew. This teaches us that He gives us good things for more than bare necessity, that we may serve Him cheerfully, not grudgingly, and learn temperance by this plain and spare diet.
AI summary
Commenting on Exodus 16:13-21
And it came to pass, that on the sixth day,.... Of the week, or from the first raining of the manna, which was the same: they gathered twice as much bread; as they had used to do on other days, a greater quantity falling, and which was more easily taken up: two omers for one man; or, "instead of one" (t) of one omer; so...
Exo 16:19-21 In the second place, Moses commanded them, that no one was to leave any of what had been gathered till the next morning. Some of them disobeyed, but what was left went into worms (תּולעים ירם literally rose into worms) and stank. Israel was to take no care for the morrow (Mat 6:34), but to enjoy the daily bread received from God in obedience to the giver.
Commenting on Exodus 16:19-21