In What Sense did King Ahab “Serve Ba’al”? 2 Kings 10:18

I have been trying to understand better the religious attitude of King Ahab. He was famously denounced by the usurper King Jehu, who, in the generation after Ahab, massacred his 60 sons along with his queen (Jezebel). In 2 Kings 10:18, Jeh…