They confronted him and said, "It is not right for you, Uzziah, to burn incense to the LORD. That is for the priests,1 the descendants2 of Aaron,3 who have been consecrated to burn incense.4 Leave the sanctuary, for you have been unfaithful; and you will not be honored by the LORD God."
References for 2 Chronicles 26:18
Uzziah, who had a censer in his hand ready to burn incense, became angry. While he was raging at the priests in their presence before the incense altar in the LORD's temple, leprosy5 broke out on his forehead.
References for 2 Chronicles 26:19
When Azariah the chief priest and all the other priests looked at him, they saw that he had leprosy on his forehead, so they hurried him out. Indeed, he himself was eager to leave, because the LORD had afflicted him.
King Uzziah had leprosy until the day he died. He lived in a separate house6--leprous, and excluded from the temple of the LORD. Jotham his son had charge of the palace and governed the people of the land.
References for 2 Chronicles 26:21