I am Pharaoh, i.e. I only am the king, I reserve to myself the sovereign power over thee, and over all. As the name of Caesar among the Romans was commonly used for the emperor, so the name of Pharaoh for the king. Or thus, I have the supreme power, and therefore as I have authority to give thee the following power, so I will make it good to thee, and oblige all my people to observe and obey thee. No man shall do any thing in the public affairs of the kingdom concerning matters of war or peace without thy commission or licence.
Related Commentaries of Genesis 41:44
Genesis 41:44
44 And Pharaoh said unto Joseph, I am Pharaoh, and without thee shall no man lift up his hand or foot in all the land of Egypt.