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.

And when he had possession of the kingdom, he put his servants to death that had slain the king his father:

And it came to pass when the kingdom was established in his hand, that he slew his servants who had smitten the king his father.

And it cometh to pass, when the kingdom hath been strong in his hand, that he smiteth his servants, those smiting the king his father,

Now when he became strong in the kingdom, straight away he put to death those servants who had taken the life of the king his father;

And when he had obtained the kingdom, he struck down those of his servants who had killed his father, the king.

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.

As soon as the kingdom was confirmed in his hand - No doubt those wicked men, Jozachar and Jehozabad, who murdered his father, had considerable power and influence; and therefore he found it dangerous to bring them to justice, till he was assured of the loyalty of his other officers: when this was clear, he called them to account, and put them to death.

And it came to pass, as soon as the kingdom was strengthened in his hand,.... That he was well settled on the throne, and had a share in the affection of the people, and the idolatry and murder his father had committed were worn off of the minds of the people, and the friends of the conspirators against him were become few or none:
that he slew his servants that had slain the king his father; charged them with the murder in a court of judicature, obtained a sentence against them, and had them executed.

as soon as the kingdom was confirmed in his hand--It was an act of justice no less than of filial piety to avenge the murder of his father. But it is evident that the two assassins must have possessed considerable weight and influence, as the king was obliged to retain them in his service, and durst not, for fear of their friends and supporters, institute proceedings against them until his power had been fully consolidated.