Be earnest, therefore, and repent. To the one who conquers I will give a place with me on my throne, just as I myself conquered and sat down with my Father on his throne. Let anyone who has an ear listen to what the Spirit is saying to the churches. There are few things that we enjoy that are lukewarm. We drink our tea hot or iced.
Coffee is prepared the same way.
The image that Revelation shares is one that is easy to understand. Food and drink are more palatable when they are either hot or cold. This is also an image that is judgmental. It is a word to a local church that rings with bitter sarcasm. When we hear this message we often respond in terror, or by just igises good things.