And for that thou didst see the second time a dream pertaining to the same thing: it is a token of the certainty, and that the word of God cometh to pass, and is fulfilled speedily.

“And the third time He went and spake the same thing, establishing the fact, that He was become man. For the second and third time is in the Scriptures especially indicative of truth; like as Joseph also said to Pharaoh, "Did the dream appear to thee the second time? For truth was this done, and that thou mightest be assured that this shall surely be." Therefore He too once, and twice, and three times spake the same thing, for the sake of proving the incarnation.”

“AND FOR THAT THE DREAM WAS REPEATED UNTO PHARAOH TWICE. The verse is explaining the reason for the repetition of the dream — i.e., that it occurred twice in one night — although it would have been possible for both the cows and the ears of corn to be shown in one dream and make known that there shall neither be plowing nor harvest. Yet He showed them in two separate dreams, one after another, in one night — an unusual circumstance for dreamers in order to make known that the matter is prepared, and G-d hasteneth to do it. This is the meaning of the word pa’amayim (twice) as the dreams concerning the cows and the ears of corn were not presented at one time. But Rabbi Abraham ibn Ezra explains that the repetition of the theme of the dream — through the medium of the cows and the ears of corn — attested to the fact that the matter is set and established. And the fact that the dream occurred twice in one night attested that G-d hasteneth to do it. But if so, could have been accomplished by repeating the same dream. we would say that the dream concerning the ears of corn would have been sufficient since that dream informed Pharaoh of the famine.”

“And let them, gather all the food of those good years that come,.... That is, let the under officers collect together the fifth part of all fruits of the land during the seven years of plenty: and lay up corn under the hand of Pharaoh; as his property, and only to be disposed of by his orders; for as it was to be purchased with his money, it was right that it should be in his hands, or in the hands of his officers appointed by him, as the Targum of Jonathan: and let them keep food in the cities; reserve it in the several cities throughout the land, against the years of famine.”