Chp. 9 verses 1 - 35: Moshe warns Pharaoh and then brings on the fifth plague of pestilence. Again Pharaoh agrees to release the Jews but reneges. Without warning Moshe brings on the sixth plague of boils. Again Pharaoh gives in only to renege. Moshe then warns Pharaoh and brings the seventh plague of Hail. Pharaoh assures Moshe that he will release the people so Moshe goes outside the city to pray to Hashem that the plague should end. When it does, Pharaoh reneges again.