Exodus 9:8

The Sixth Blow: Boils

9:8 Then the Lord said to Moses and Aaron, “Take handfuls of soot from a furnace, and have Moses throw it into the air while Pharaoh is watching.

Exodus 10:21

The Ninth Blow: Darkness

10:21 The Lord said to Moses, “Extend your hand toward heaven so that there may be darkness over the land of Egypt, a darkness so thick it can be felt.”