Charles Ellicott Commentary 1 Kings 15:23

"Now the rest of all the acts of Asa, and all his might, and all that he did, and the cities which he built, are they not written in the book of the chronicles of the kings of Judah? But in the time of his old age he was diseased in his feet." — 1 Kings 15:23 (ASV)

All his might. — This phrase, not used of Rehoboam or Abijah, is significant, indicating the increased power of Judah under Asa.

The cities which he built. — The fortification of cities (see 2 Chronicles 11:5–10; 2 Chronicles 14:6) was naturally the traditional policy of the kingdom of Judah. This kingdom, though small in extent and menaced by more powerful neighbors, possessed an exceedingly strong country and a central position.

Diseased in his feet. — In Chronicles, it is added significantly that in his disease he sought not to the Lord, but to the physicians (2 Chronicles 16:7–12).

From the same records, it also appears that in his last days Asa ventured to defy prophetic authority by imprisoning Hanani the seer.

Prosperity, it is implied, had somewhat deteriorated his character, though he still continued faithful to the worship of God.

Certainly, Jehoshaphat, on his accession, still found much to do for the religious condition of his people.