1 Kings 16:1 - Joseph Benson’s Commentary on the Old and New Testaments

The word of the Lord came to Jehu This Jehu was a prophet, and the son of a prophet. His father Hanani, who was a prophet before him, was sent to reprove Asa king of Judah for hiring Benhadad king of Syria to assist him against Baasha and for relying on the Syrians, instead of relying on the Lord, 2 Chronicles 16:7. But Jehu, Hanani's son, who was young and more active, was sent on this longer and more dangerous expedition to Baasha, king of Israel. It appears, he continued long in his usefulness; for we find him reproving Jehoshaphat, above forty years after, and writing the annals of that prince, 2Ch 19:2; 2 Chronicles 20:24. The gift of prophecy, thus happily entailed, and descending from the father to the son, was worthy of so much the more honour. It seems there was not wanting a succession of prophets, during the kingdoms of Israel and Judah, as Abarbinel has observed, their names being preserved in the Holy Scriptures.