Now it came to pass in the third year of Hoshea son of Elah king of Israel, that Hezekiah the son of Ahaz king of Judah began to reign. Now - in the third year of Hoshea - See the note on 2 Kings 16:1 (note), where this chronology is considered.
Related Commentaries of 2 Kings 18:1
2 Kings 18:1
1 Now it came to pass in the third year of Hoshea son of Elah king of Israel, that Hezekiaha the son of Ahaz king of Judah began to reign.