Exodus 7:1

With this chapter begins the series of miracles performed in Egypt. They are progressive. The first miracle is performed to accredit the mission of the brothers; it is simply credential, and unaccompanied by any infliction. Then come signs which show that the powers of nature are subject to the will of Yahweh, each plague being attended with grave consequences to the Egyptians, yet not inflicting severe loss or suffering; then in rapid succession come ruinous and devastating plagues, murrain, boils, hail and lightning, locusts, darkness, and lastly, the death of the firstborn. Each of the inflictions has a demonstrable connection with Egyptian customs and phenomena; each is directly aimed at some Egyptian superstition; all are marvelous, not, for the most part, as reversing, but as developing forces inherent in nature, and directing them to a special end. The effects correspond with these characteristics; the first miracles are neglected; the following plagues first alarm, and then for a season, subdue, the king, who does not give way until his firstborn is struck. Even that blow leaves him capable of a last effort, which completes his ruin, and the deliverance of the Israelites.

I have made thee a god - Or “appointed thee.” See the margin reference. Moses will stand in this special relation to Pharaoh, that God will address him by a prophet, i. e. by one appointed to speak in His name. The passage is an important one as illustrating the primary and essential characteristic of a prophet, he is the declarer of God’s will and purpose.