2 Chronicles 23:3
And all the congregation made a covenant with the king in the house of God. And he said unto them, Behold, the king’s son shall reign, as the Lord hath said of the sons of David.
Cross-reference
2 Chronicles 23:16 records the same covenant between God, king, and people — a direct continuation.
In 2 Chronicles 6:16, Solomon prays for the same promise: a descendant on David's throne if they obey. This shows the covenant's condition.
In 2 Chronicles 7:18, God reaffirms the Davidic covenant after Solomon's prayer, promising a perpetual ruler — the same promise Jehoiada invokes.
In 2 Chronicles 21:7, God spares David's house because of the covenant — the same promise that justifies Jehoiada's coronation of Joash.
2 Samuel 5:3 describes David making a covenant with Israel at Hebron — similar covenant with a Davidic king.
In 2 Samuel 7:12, God promises David an heir to establish his kingdom — the original prophecy that Jehoiada trusts when declaring the king's son shall reign.
In 2 Samuel 7:16, God promises an everlasting throne to David's house — the eternal guarantee behind Jehoiada's claim that the son shall reign.
In 1 Kings 2:4, David repeats the condition for the throne — the same conditional promise that underlies Jehoiada's covenant to make Joash king.
In 1 Kings 9:5, God promises to establish Solomon's throne conditionally — a reiteration of the Davidic covenant Jehoiada here acts upon.
In Psalm 89:29, God promises David's offspring an eternal throne — the same enduring covenant that Jehoiada relies on for Joash's coronation.