What the substance called manna was, is utterly unknown, but from the circumstances in the text, it is evident that it was not a natural production, but was miraculously sent by Jehovah. These the learned Abarbinel, a most judicious Jewish interpreter, has thus enumerated; The natural manna was never found in the desert where this fell;--where the common manna does fall, it is only in the spring time, in March and April, whereas this fell throughout all the months in the year; the ordinary manna does not melt in the sun, as this did;--it does not stink and breed worms, as this did, when kept till the morning;--it cannot be ground or beaten in a mortar, so as to make cakes, as this was;--the common manna is medicinal and purgative, and cannot be used for food and nutriment, as this was;--this fell in a double proportion on the sixth day, and not on the sabbath, as it certainly would have done had it fallen naturally;--it followed them in all their journeys, where ever they pitched their tents;--and it ceased at the very time of the year when the other falls, namely, in March, when the Israelites were come to Gilgal. Whatever this substance was, it does not appear to have been common to the wilderness. From

Deuteronomy 8:3,16 And he humbled you, and suffered you to hunger, and fed you with manna, which you knew not, neither did your fathers know...

, it is evident that the Israelites never saw it before; and from a pot of it being preserved, it is certain that nothing of the kind ever appeared again.

Exodus 16:5,16 And it shall come to pass, that on the sixth day they shall prepare that which they bring in...

Leviticus 25:12,22 For it is the jubilee; it shall be holy to you: you shall eat the increase thereof out of the field...