2 Chronicles 12:14 Commentary - English Annotations on the Holy Bible by Matthew Poole
Prepared not, or directed not, or settled not, &c, i.e. although he humbled himself, and seemed penitent for a season, and professed the true religion and worship of God; yet he quickly relapsed into his former sins, because he was not sincere nor serious in his actions, and his heart was not right with God.
Consult other comments:
2 Chronicles 12:14 - Albert Barnes' Notes on the Bible
2 Chronicles 12:14 - Joseph Benson’s Commentary on the Old and New Testaments
2 Chronicles 12:14 - The Cambridge Bible for Schools and Colleges
2 Chronicles 12:14 - Companion Bible Notes, Appendices and Graphics
2 Chronicles 12:14 - Ellicott's Commentary for English Readers (Old and New Testaments)
2 Chronicles 12:14 - John Gill's Exposition of the Entire Bible
2 Chronicles 12:14 - Charles Simeon's Horae Homileticae (Old and New Testaments)
2 Chronicles 12:14 - Biblical Illustrator Edited by Joseph S. Exell
2 Chronicles 12:14 - English Annotations on the Holy Bible by Matthew Poole
2 Chronicles 12:14 - 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.