Exodus 9:10-13

9:10 So they took soot from a furnace and stood before Pharaoh, Moses threw it into the air, and it caused festering boils to break out on both people and animals.

9:11 The magicians could not stand before Moses because of the boils, for boils were on the magicians and on all the Egyptians. 9:12 But the Lord hardened Pharaoh’s heart, and he did not listen to them, just as the Lord had predicted to Moses.

The Seventh Blow: Hail

9:13 The Lord said to Moses, “Get up early in the morning, stand before Pharaoh, and tell him, ‘Thus says the Lord, the God of the Hebrews: “Release my people so that they may serve me!