John Gill Commentary Exodus 9:26

"Only in the land of Goshen, where the children of Israel were, was there no hail." — Exodus 9:26 (ASV)

Only in the land of Goshen, where the children of Israel [were], was there no hail. So that such Egyptians as might dwell among them, they, their servants, their cattle, and their fruits, escaped this plague; and oftentimes do wicked men fare the better for the people of God that are among them.