And when the children of Israel saw it, they said one to another, It is manna: for they knew not what it was. And Moses said unto them, This is the bread which the LORD has given you to eat.
All Commentaries on Exodus 16:15 Go To Exodus 16
Ambrose of Milan
AD 397
That this is heavenly food is demonstrated by the person speaking: “I shall rain upon you bread from heaven.” Manna is a cause (aition),because God, who waters minds with the dew of wisdom, uses it as an instrument. And manna is a kind of matter (hyle), because souls that see it and taste it are delighted and ask whence it comes, manna which is more splendid that light and sweeter than honey. They can be answered with a chain of quotations from Scripture: “This is the bread that the Lord gave to you to eat,” and “This is the Word of God which God has established” or ordained. By this bread the souls of the prudent are fed and delighted, since it is fair and sweet, illuminating the souls of the hearers with the splendor of truth and drawing them on with the sweetness of the virtues. ()..