Genesis 47:4 - Joseph Benson’s Commentary on the Old and New Testaments

To sojourn in the land are we come Not to settle there for ever; only to sojourn, while the famine prevailed so in Canaan, which lay high, that it was not habitable for shepherds, the grass being burned up much more than in Egypt, which lay low, and where the corn chiefly failed, but there was tolerably good pasture. But although Jacob and his sons intended only to sojourn in Goshen or Egypt till the famine should be over, yet first the kindness they received encouraged them to continue, and at last the Egyptians rendered their posterity slaves, and compelled them to stay.