And Jehoiada made a covenant between the LORD and the king and the people, that they should be the LORD'S people; between the king also and the people.
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George Leo Haydock
People. Joiada, as mediator (Calmet) between God, the king, and the people, engaged the two latter to be faithful to their common Lord, and to each other. They promised mutually to observe the laws, and, on that condition, the high priest gave them an assurance that God would protect them. (Haydock)
The covenant entered into by their fathers (Exodus xix. 5.) was renewed. (Calmet)