They're frightening words. They threaten our comfort zone. I don't even want to say these words in polite society. Literally, I'll vomit you out of my mouth. Hot water can be nice.
Cold water can be very refreshing.
Lukewarm water is nauseating. That's what Christ says about a church that is lukewarm. And he checks the temperature of his church, and when he finds it lukewarm, he's alarmed, he's appalled, he's sickened in the pit of his stomach. It's very interesting that this problem doesn't happen overnight. You don't become lukewarm overnight.