The phrase, “confirmed in his hand” 2 Kings 15:19, usually expresses the authorisation of a new reign by an imperial superior (see 2 Kings 15:19 note); but here it describes the result when the troubles consequent upon the murder of Joash had passed away. The new king’s authority was generally recognized by his subjects.
Related Commentaries of 2 Kings 14:5
2 Kings 14:5
5 And it came to pass, as soon as the kingdom was confirmed in his hand, that he slew his servants which had slain the king his father.