John Gill's  Exposition of the Bible 

2 Chronicles 20:31

And Jehoshaphat reigned over Judah: he was thirty and five years old when he began to reign, and he reigned twenty and five years in Jerusalem. And his mother's name was Azubah the daughter of Shilhi.

And Jehoshaphat reigned over Judah,.... Of these two verses, See Gill on "1 Kings 22:42".

See Gill on "1 Kings 22:43".