1. Proclaim God's name in all the earth (13-26)
God could have wiped the Egyptians off the face of the earth with one blow. But he did not. He had a larger purpose in these acts of judgment: he wanted to show them his power, so that his name might be proclaimed in all the earth--he had a world mission purpose. Moses warned the Egyptians, and those who feared the word of the Lord brought their livestock inside. Then Moses stretched out his staff and the hail, accompanied by thunder and lightning, poured down. It was the worst hail storm in Egypt's history. But no hail fell in Goshen.
2. This time I have sinned (27-35)
The terrible display of God's power frightened Pharaoh, so he acknowledged his sin and asked for relief; he agreed to let the Israelites go. Moses spread out his hands toward the Lord, and the thunder and hail stopped. But Pharaoh sinned again and would not keep his promise to let them go.
Application: Lord, may your name be proclaimed in all the earth; grant that all men everywhere may repent and turn to you.
One Word: Proclaim his name