Treasury of Scripture
old corn The people would find abundance of old corn in the deserted granaries of the affrighted inhabitants: and the barley harvest being ripe, after offering the sheaf of first-fruits, they ate also new parched corn; and thus the manna being no longer necessary, ceased, after having been sent them regularly for almost forty years. To Christians the manna for their souls shall never fail, till they arrive at the Canaan above, to feast on its rich and inexhaustible provisions.
unleavened cakes
Exodus 12:18-20 In the first month, on the fourteenth day of the month at even, you shall eat unleavened bread...
Exodus 13:6,7 Seven days you shall eat unleavened bread, and in the seventh day shall be a feast to the LORD...
Leviticus 23:6,14 And on the fifteenth day of the same month is the feast of unleavened bread to the LORD: seven days you must eat unleavened bread...