What is the church according to the Truth?

What is the church according to the Truth and the Creator of all things who conquered sin and death by his faithfulness?

“This is what the Amen, the faithful and true witness, the originator of God’s creation, says: ‘I know your works, that you are neither cold nor hot. Would that you were cold or hot! Thus, because you are lukewarm and neither hot nor cold, I am about to vomit you out of my mouth! Because you are saying, “I am rich, and have become rich, and I have need of nothing,” and you do not know that you are wretched and pitiable and poor and blind and naked, I advise you to buy from me gold refined by fire, in order that you may become rich, and white clothing, in order that you may be clothed and the shame of your nakedness may not be revealed, and eye salve to smear on your eyes, in order that you may see. As many as I love, I reprove and discipline. Be zealous, therefore, and repent! Behold, I stand at the door and knock! If anyone hears my voice and opens the door, indeed I will come in to him and dine with him, and he with me. The one who conquers, I will grant to him to sit down with me on my throne, as I also have conquered and have sat down with my Father on his throne. The one who has an ear, let him hear what the Spirit says to the churches.’”