Exodus 10

God has hardened Pharoah's heart. The locusts are the next plague that causes a disturbance. Pharoah agrees to only allow the able bodied men to leave, and that is not the terms of conditions God required.

When Pharaoh refuses to listen to God, the next incident is three days of darkness. Pharoah agrees to allow the people to leave, but requires that the animals stay behind. This still does not meet God's request. Pharaoh tells Moses and Aaron they are dead if Pharoah ever sees their faces again. Moses agrees.