Listen! I am standing at the door, knocking: if you hear my voice and open the door, I will come in to you and eat with you, and you with me. (Revelation 3:20) For Christians, to share in the Eucharist, the Holy Communion, means to live as people who know that they are always guests—that they have been welcomed and that they are wanted. It is, perhaps, the most simple thing that we can say about Holy Communion, yet it is still supremely worth saying. In Holy Communion, Jesus Christ tells