2 Kings 15:7

and they buried him with his fathers in the city of David His body, as appears from 2 Chron., was not laid with the rest of the kings in the royal sepulchre, but apparently in the same piece of land. -They buried him with his fathers in the field of burial which belonged to the kings: for they said; He is a leper".

Jotham his son reigned We can scarcely suppose that this notice would have been thus set down in the ordinary formula after Azariah's death, if Jotham had been joint ruler all the time of his father's leprosy. The smiting of the king must have been in the latter part of his reign. The conquests, buildings, agriculture, and military organization described by the Chronicler (see above on verse 4) must have needed many years to bring to the perfection they attained. Therefore, though Azariah's reign was fifty-two years long, we need not think of him as a leper for more than the last ten years. As Jotham succeeded his father at twenty-five he would only have been fifteen when he was placed over the household. This may perhaps make ten years appear too long a time to assign to his father's leprosy.