Following are a number of back-translations as well as a sample translation for translators of 2 Chronicles 23:3:

• Kupsabiny: “Those people gathered in the House of God and made a covenant with Joash who was son of (the/a) king. Jehoiada said to those people, ‘This is the son of the king! Let him rule like God said about the descendants of David.” (Source: Kupsabiny Back Translation)
• Newari: “They gathered in the temple, and they made a covenant with Joash, the king’s son.
  Jehoiada said to them, "As the LORD has promised concerning the descendant of David, let the king’s son reign."” (Source: Newari Back Translation)
• Hiligaynon: “they went to the temple of God and made a covenant with Joash the child of the king. Jehoyada said to the people, ‘This is now the time that the child of the king will-reign, according to the promised of the LORD that there is always a descendant of David that will-reign.” (Source: Hiligaynon Back Translation)
• English: “the whole group went to the temple and made an agreement with the young king there. Jehoiada said to them, ‘This is the son of the previous king of Judah. So he is the one who must rule, like Yahweh promised that the descendants of King David must do.” (Source: Translation for Translators)