The physical presence of other Christians is a source of incomparable joy and strength to the believer. . . .The prisoner, the sick person, the Christian in exile sees in the companionship of a fellow Christian a physical sign of the gracious presence of the triune God. Visitor and visited in loneliness recognize in each other the Christ who is present in the body; they receive and meet each other as one meets the Lord, in reverence, humility, and joy. . . . It is true, of course that what is an unspeakable gift of God for the lonely individual is easily disregarded and trodden under foot by those who have the gift every day.
Life Together, 8-9