2 Chronicles 29:23 Commentary - English Annotations on the Holy Bible by Matthew Poole
i.e. The king and the elders of the congregation in the name of the whole congregation.
Consult other comments:
2 Chronicles 29:23 - Albert Barnes' Notes on the Bible
2 Chronicles 29:23 - Joseph Benson’s Commentary on the Old and New Testaments
2 Chronicles 29:23 - The Cambridge Bible for Schools and Colleges
2 Chronicles 29:23 - Adam Clarke's Commentary and Critical Notes on the Bible
2 Chronicles 29:23 - Companion Bible Notes, Appendices and Graphics
2 Chronicles 29:23 - Ellicott's Commentary for English Readers (Old and New Testaments)
2 Chronicles 29:23 - Geneva Bible Notes
2 Chronicles 29:23 - John Gill's Exposition of the Entire Bible
2 Chronicles 29:23 - English Annotations on the Holy Bible by Matthew Poole
2 Chronicles 29:23 - John Trapp's Complete Commentary (Old and New Testaments)
English Annotations on the Holy Bible by Matthew Poole

Matthew Poole (1624–1679) wrote English Annotations on the Holy Bible, completing the chapters as far as Isaiah 58 before his death in 1679. The rest of the Annotations were completed by friends and colleagues among his Nonconformist brethren. The first printing of the completed edition was in 1685, 2 volumes folio, followed by editions in 1688, 1696 (with valuable chapter outlines added by the editors, Samuel Clark and Edward Veale), and the 4th and definitive edition in 1700, the basis of all others.