Jonah 1:1-3a
(1) Now the word of the LORD came unto Jonah the son of Amittai, saying,
(2) Arise, go to Nineveh, that great city, and cry against it; for their wickedness is come up before me.
(3) But Jonah rose up to flee…
Jonah had a problem. God had a vision for the people of Nineveh and Jonah turned a blind eye to it. This vision problem of Jonah’s wasn’t a handicap. It wasn’t a misunderstanding. It wasn’t even that Jonah could not see God’s point of view. It was that he would not see it. He had an “I” problem: “I want vengeance. I want the Ninevites destroyed. I want my prayers answered my way.”
Brackish water is no good for drinking. A church with a brackish testimony is good for even less. A church like that actually makes the Lord sick. 
Church discipline is never a pleasant thing. It weighs heavily on the hearts of church leadership and it is uncomfortable for a church body to endure. That’s by design. It isn’t meant to be pleasant. It is corrective (Proverbs 22:10) and instructive (Proverbs 21:11). Unpleasant as it is, when it is not carried out, the church and its power in the community both suffer. 
Preaching against worldliness may be passé in the modern church, but with Christ it has never gone out of style. When He introduces Himself to the church at Pergamum, Jesus describes Himself as “He which hath the sharp sword with two edges.” He was not giving them a warm welcome. He was reminding them that He is Judge and Executioner, and that His judgment begins in His own house. Pergamum was a worldly church and Jesus was having no part of it because “the friendship of the world is enmity with God” (see Ephesians 2:16). 