Last week we saw how the plagues are for the glory of God. The purpose of the first set of plagues is grounded in the purpose of the first, the turning of the Nile to blood. The Lord’s purpose in this plague is plain: by this you shall know that I am the LORD. In the first three plagues, God shows Pharaoh and the Egyptians that he, the God of the Hebrews, is truly God. As the plagues develop, he’ll amplify this message. Any man who takes up his Scripture and reads the Exodus account of the plagues ought to confess that Yahweh is God. There are several ways God glorifies himself in our passage.