Charles H. Spurgeon on Psalms 78:24

And had rained down manna upon them to eat. There was so much of it, the skies poured with food, the clouds burst with provender. It was fit food, proper not for looking at but for eating; they could eat it as they gathered it. Mysterious though it was, so that they called it manna, or "what is it?" yet it was eminently adapted for human nourishment; and it was both abundant and adapted, so also was it available! They had not far to fetch it, it was nigh them, and they had only to gather it up. O Lord Jesus, thou blessed manna of heaven, how all this agrees with Thee! We will even now feed on Thee as our spiritual meat, and will pray Thee to chase away all wicked unbelief from us. Our fathers ate manna and doubted; we feed upon Thee and are filled with assurance. And had given them of the corn of heaven. It was all a gift without money and without price. Food which dropped from above, and was of the best quality, so as to be called heavenly corn, was freely granted them. The manna was round, like a coriander seed, and hence was rightly called corn; it did not rise from the earth, but descended from the clouds, and hence the words of the verse are literally accurate. The point to be noted is that this wonder of wonders left the beholders, and the feasters, as prone as ever to mistrust their Lord.