The Chronicler expands on 2 Kings 14:21ff; 15:1-7, following a two-phase structure: first, a pious and prosperous king (verses 1-15); then, a sacrilegious king punished by God (verses 16-23). The key moment is verse 16, where Uzziah’s sin involves arrogating priestly rights by burning incense in the Temple. The punishment of leprosy made him unclean and prevented him from entering the sanctuary (Lev 13:45).