And Uzziah the king was a leper unto the day of his death, and dwelt in a several house, being a leper; for he was cut off from the house of the LORD: and Jotham his son was over the king's house, judging the people of the land. And dwelt in a several house - He was separated, because of the infectious nature of his disorder, from all society, domestic, civil, and religious.
Jotham - was over the king's house - He became regent of the land; his father being no longer able to perform the functions of the regal office.