Salmi 78:24

And had rained down manna upon them to eat, and had given them of the corn of heaven.

Ver. 24. And had rained down manna upon them] Manna signifieth, What is this? whereunto in the allegory answereth, This is my body. Or, according to others, it signifieth a prepared portion, prepared by God, so that they might presently eat of it, though they might grind, or pound, or bake, or boil it also, they might do anything with it, as they might with meal; whence it is here called the corn of heaven, that is, a seed which was unto them instead of corn.