Genesis 42:1 - Clarke's commentary and critical notes on the Bible

Now when Jacob saw that there was corn in Egypt, Jacob said unto his sons, Why do ye look one upon another? Jacob saw that there was corn - That is, Jacob heard from the report of others that there was plenty in Egypt. The operations of one sense, in Hebrew, are often put for those of another. Before agriculture was properly known and practiced, famines were frequent; Canaan seems to have been peculiarly vexed by them. There was one in this land in the time of Abraham, Genesis 12:10; another in the days of Isaac, Genesis 26:1; and now a third in the time of Jacob. To this St. Stephen alludes, Acts 7:11 : there was great affliction, and our fathers found no sustenance.