When he had finished making the burnt offering, Jehu said to the guards and officers, “Go in and kill them. Do not let anyone out.” So the guards and officers put them to the sword, threw the bodies out, and went into the inner room of the temple of Baal.
Jehu, pushing on his work, is here, I. Courting the friendship of a good man, Jehonadab the son of Rechab, Kg2 10:15, Kg2 10:16. This Jehonadab, though mortified to the world and meddling little with the business of it (as appears by his charge to his posterity, which they religiously observed 300 years after, not to drink wine nor dwell in cities, Jer 35:6, etc.)...
Commenting on 2 Kings 10:15-28
And it came to pass, as soon as he had made an end of offering the burnt offering,.... The chief of the priests of Baal, whose office it was to do this service: that Jehu said to the guard, and to the captains, go in and slay them, let none come forth; this he said to the eighty men set to guard the temple, and...
And it came to pass, as soon as he had made an end of offering the burnt offering, that Jehu said to the guard and to the captains, Go in, [and] slay them; let none come forth. And they smote them with the edge of the sword; and the guard and the captains cast [them] out, and went to the city of the house of Baal.