And Jehoiada made a {p} covenant between the LORD and the king and the people, that they should be the LORD'S people; between the {q} king also and the people.

(p) That both the king and the people should maintain the true worship of God and destroy all idolatry.

(q) That he should govern and they obey in the fear of God.

Wesley's Notes

11:17 A covenant - A sacred covenant whereby he solemnly engaged both the king, and people, that they should be the Lord's people; that they should renounce, and root out all idolatry, and set up and maintain God's true worship. Between the king - This was a civil covenant, whereby the king engaged himself to rule them justly, and in the fear of God; and the people obliged themselves to defend and obey him.

Jamieson-Fausset-Brown Bible Commentary

2Ki 11:17-20. Jehoiada Restores God's Worship.

17, 18. a covenant between the Lord and the king and the people-The covenant with the Lord was a renewal of the national covenant with Israel (Ex 19:1-24:18; "to be unto him a people of inheritance," De 4:6; 27:9). The covenant between the king and the people was the consequence of this, and by it the king bound himself to rule according to the divine law, while the people engaged to submit, to give him allegiance as the Lord's anointed. The immediate fruit of this renewal of the covenant was the destruction of the temple and the slaughter of the priests of Baal (see 2Ki 10:27); the restoration of the pure worship of God in all its ancient integrity; and the establishment of the young king on the hereditary throne of Judah [2Ki 11:19].

Matthew Henry's Concise Commentary

11:17-21 King and people would cleave most firmly to each other, when both had joined themselves to the Lord. It is well with a people, when all the changes that pass over them help to revive, strengthen, and advance the interests of religion among them. Covenants are of use, both to remind us of, and bind us to, the duties already binding on us. They immediately abolished idolatry; and, pursuant to the covenant with one another, they expressed mutual readiness to help each other. The people rejoiced, and Jerusalem was quiet. The way for people to be joyful and at peace, is to engage fully in the service of God; for the voice of joy and thanksgiving is in the dwellings of the righteous, but there is no peace for the wicked.