2 Chronicles 29:9 Commentary - English Annotations on the Holy Bible by Matthew Poole
Or were, though they were presently released, 2Ch 28:5,14,15.
Consult other comments:
2 Chronicles 29:9 - Companion Bible Notes, Appendices and Graphics
2 Chronicles 29:9 - Ellicott's Commentary for English Readers (Old and New Testaments)
2 Chronicles 29:9 - John Gill's Exposition of the Entire Bible
2 Chronicles 29:9 - English Annotations on the Holy Bible by Matthew Poole
2 Chronicles 29:9 - 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.