Set Your Heart on Seeking God

2 Chronicles 19:3
There is, however, some good in you, for you have rid the land of the Asherah poles and have set your heart on seeking God."

This follows a rather cinematic chapter featuring four hundred false prophets, one true prophet, the death of Ahab, and a close call for Jehoshaphat.
Why did this true-hearted king have anything at all to do with the dreadful Ahab? Could this be the flesh talking? Kings made alliances with other kings. Kings went to war for fun and profit. Maybe Jehoshaphat did what kings do without much reflection.
Yet he asked for a true prophet, unimpressed by the showmanship of Ahab's pet prophets. But after hearing from him, he went on with the ill-conceived project, escaping alive only by God's intervention.
Today's heart came from Jehu the prophet, who met him as he returned home. Jehu promised him the wrath of God, but it seems Jehoshaphat was inspired to do better. He appointed judges and urged them to do right; when several armies threatened, he responded by leading Judah in revival.
Some good in him, indeed. He had his heart set right, and he was drawn back to the righteous path.