2 Kings 9-10 Jehu And The End Of Ahab’s Family

How long does God allow wickedness to continue?  Why? What is God’s desire?  Why the secret anointing to Jehu?  What “assignment” was Jehu given?  What is significant in the meeting of the kings “at the plot of ground that had belonged to Nabath” (9:21)?  How did Jehu fulfill his “assignment”?  How did Jehu “destroy Baal worship in Israel”?  What was God’s conditional promise to Jehu?  Why wasn’t it given?