2 Chronicles 26:5 Commentary - English Annotations on the Holy Bible by Matthew Poole
He sought God, i.e. he persisted in the true religion and worship of God.
In the days of Zechariah; as long as he lived. Compare 2Ch 24:2. who had understanding; who was a very knowing and experienced person. Or, who made him understanding; or, who instructed him; who was his tutor and teacher, and had great authority and influence upon him; and so restrained him from those exorbitancies to which he was otherwise inclined.
In the visions of God; either,
1. In prophetical visions, which he either received from God himself, or understood and explained the prophetical visions of others, which was a special gift of God; of which see Gen 41:15; Dan 1:17; 2:19. Or,
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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.