Then they brought out the king’s son and put the crown on him and gave him the testimony. And they proclaimed him king, and Jehoiada and his sons anointed him, and they said, “Long live the king.”
We may well imagine the bad posture of affairs in Jerusalem during Athaliah's six years' usurpation, and may wonder that God permitted it and his people bore it so long; but after such a dark and tedious night the returning day in this revolution was the brighter and the more welcome.
Commenting on 2 Chronicles 23:1-11
Then they brought out the king's son, and put upon him the crown, and gave him the testimony--Some think that the original word rendered "testimony," as its derivation warrants, may signify here the regalia, especially the bracelet (Sa2 1:10); and this view they support on the ground that "gave him" being supplemented, the text properly runs thus, "put upon him the crown and testimony." At...
Then they brought out the king's son, and put upon him the crown, and [gave him] the testimony, and made him king. And Jehoiada and his sons anointed him, and said, God save the king. (g) That is, the book of the law or as some read they put on him his royal apparel.