Psalms 78:24

Let us turn back to the one who performed these miracles. He is himself the bread that came down from heaven; but bread that nourishes and never diminishes; bread that can be eaten but cannot be eaten up. This bread was also signified by manna, of which it was said, "He gave them the bread of heaven; people ate the bread of angels. Who can the bread of heaven be, but Christ? But for people to eat the bread of angels, the Lord of angels became a human being. Because if he had not become this, we would not have his flesh; if we did not have his flesh, we would not eat the bread of the altar.

This is where you are going; the same one is the way by which you are going. You do not go through one thing to something else; you do not come through something else to Christ. You come through Christ to Christ. How through Christ to Christ? Through Christ the man to Christ the God, through the Word made flesh to the Word which in the beginning was God with God, from that which people ate to that which every day the angels eat. For so it was written, "He gave them the bread of heaven; people ate the bread of the angels." Who is the bread of angels? "In the beginning was the Word, and the Word was with God, and the Word was God." How did people eat the bread of angels? "And the Word was made flesh and dwelt among us."

Lastly, when both these things have been briefly touched, afterwards he is evidently following out the order of the narrative. "Because they believed not in God, nor hoped in His saving health." For when he had told why fire was lighted in Jacob, and anger went up upon Israel, that is to say, "because they believed not in God, nor hoped in His saving health:" immediately subjoining the evident blessings for which they were ungrateful, he saith, "and He commanded the clouds above, and opened the doors of Heaven." "And He rained upon them manna to eat, and gave them bread of Heaven." "Bread of angels man did eat: dainties He sent them in abundance." "He brought over the South Wind from Heaven, and in His virtue He led in the South West Wind." "And He rained upon them fleshes like dust, and winged fowls like the sand of the sea." "And they fell in the midst of their camp, around their tabernacles." "And they ate and were filled exceedingly; and their desire He brought to them: they were not deprived of their desire." Behold why He had delayed. But what He had delayed let us hear. "Yet the morsel was in their mouths, and the anger of God came down upon them." Behold what He had delayed. For before "He delayed:" and afterwards, "fire was lighted in Jacob and anger went up upon Israel." He had delayed therefore in order that He might first do what they had believed that He could not do, and then might bring upon them what they deserved to suffer. For if they placed their hope in God, not only would their desires of the flesh but also those of the spirit have been fulfilled. […]

And had rained down manna upon them to eat,....

God, who has the key of the clouds, opened the doors of heaven, and that is more than opening the windows, which yet is spoken of as a great blessing, Mal. iii. To all that by faith and prayer ask, seek, and knock, these doors shall at any time be opened; for the God of heaven is rich in mercy to all that call upon him.