Moses
Genesis 42:5BSB·traditional attribution

So the sons of Israel were among those who came to buy grain, since the famine had also spread to the land of Canaan.

Matthew Henry Presbyterian @wholebiblehenry

Though Jacob's sons were all married, and had families of their own, yet, it should seem, they were still incorporated in one society, under the conduct and presidency of their father Jacob. We have here, I. The orders he gave them to go and buy corn in Egypt, Gen 42:1, Gen 42:2. Observe, 1. The famine was grievous in the land of Canaan.

Commenting on Genesis 42:1-6

John Gill Reformed Baptist @doctorgill

And Joseph was the governor over the land,.... Not the land of Canaan last mentioned, but the land of Egypt; under Pharaoh, he had the chief and sole authority, and especially in the affair of the corn, and the disposal of that: and he it was that sold to all the people of the land: of Egypt, and also to all that came out of...

Jamieson-Fausset-Brown Reformed @jfbcommentary

the famine was in the land of Canaan--The tropical rains, which annually falling swell the Nile, are those of Palestine also; and their failure would produce the same disastrous effects in Canaan as in Egypt. Numerous caravans of its people, therefore, poured over the sandy desert of Suez, with their beasts of burden, for the purchase of corn; and among others, "the sons of Israel"...