2 Chronicles 32:31 Commentary - English Annotations on the Holy Bible by Matthew Poole
God left him, to wit, to himself, and his own impotency and corruption. God withdrew from him those supplies and assistances of his Spirit which would certainly and effectually have kept him from that sin, and suffered Satan to tempt him, and him to fall into the sin of pride and ostentation.
That he might know; either,
1. That God might know it. So it is spoken of God after the manner of men; whereof we have had many instances. Or,
2. That Hezekiah might know that he had infirmities and sins as well as virtues; and therefore that the great mercies which he had received were not the effects of his own merits, as he might be prone to believe, but of God’s free grace.
Consult other comments:
2 Chronicles 32:31 - Joseph Benson’s Commentary on the Old and New Testaments
2 Chronicles 32:31 - The Cambridge Bible for Schools and Colleges
2 Chronicles 32:31 - Adam Clarke's Commentary and Critical Notes on the Bible
2 Chronicles 32:31 - Companion Bible Notes, Appendices and Graphics
2 Chronicles 32:31 - Ellicott's Commentary for English Readers (Old and New Testaments)
2 Chronicles 32:31 - Geneva Bible Notes
2 Chronicles 32:31 - John Gill's Exposition of the Entire Bible
2 Chronicles 32:31 - Charles Simeon's Horae Homileticae (Old and New Testaments)
2 Chronicles 32:31 - Biblical Illustrator Edited by Joseph S. Exell
2 Chronicles 32:31 - English Annotations on the Holy Bible by Matthew Poole
2 Chronicles 32:31 - 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.