Azariah was a prophet

Prophet

In religion, a prophet, from the Greek word προφήτης profitis meaning "foreteller", is an individual who is claimed to have been contacted by the supernatural or the divine, and serves as an intermediary with humanity, delivering this newfound knowledge from the supernatural entity to other people...

 described in 2 Chronicles 15. The Spirit of God

Ruach HaKodesh

The Hebrew language phrase ruach ha-kodesh is a term used in the Hebrew Bible and Jewish writings to refer to the Spirit of YHVH. The Hebrew term ruakh kodeshka , without the definite article, also occurs...

 is described as coming upon him (verse 1), and he goes to meet King Asa of Judah

Asa of Judah

Asa was the third king of the Kingdom of Judah and the fifth king of the House of David. He was the son of Abijam, grandson of Rehoboam, and great-grandson of Solomon. The Hebrew Bible gives the period of his reign as 41 years. His reign is dated between 913-910 BCE to 873-869 BCE. He was...

 to exhort him to carry out a work of reform. Azariah is described as being the "son of Oded

Oded

* The second was Oded the Samarian....

" (verse 1), but the Masoretic Text

Masoretic Text

The Masoretic Text is the authoritative Hebrew text of the Jewish Bible and is regarded as Judaism's official version of the Tanakh. While the Masoretic Text defines the books of the Jewish canon, it also defines the precise letter-text of these biblical books, with their vocalization and...

omits Azariah's name in verse 8, suggesting that the prophecy is from Oded himself.