Genesis 47:7 - Joseph Benson’s Commentary on the Old and New Testaments

Jacob blessed Pharaoh Which is repeated, Genesis 47:10, as being a circumstance very remarkable. And remarkable surely it was that the greater, for such Pharaoh was in all external things, in wealth, power and glory, should be blessed of the less, Hebrews 7:7. But before God, and in reality, Jacob was much greater than Pharaoh. It is probable, therefore, that he not only saluted him, prayed for and thanked him for all his favours to him and his, all which the original word, here rendered blessed, often means; but that he blessed him with the authority of a patriarch and a prophet: and a patriarch's blessing was a thing not to be despised, no, not by a potent prince.