“Let him who is not in community beware of being alone. Into the community you were called, the call was not meant for you alone; in the community of the called you bear your cross, you struggle, you pray. You are not alone, even in death, and on the Last Day you will not be only one member of the great congregation of Jesus Christ. If you scorn the fellowship of the brethren, you reject the call of Jesus Christ, and thus your solitude can only be hurtful to you. ‘If I die, then I am not alone in death; if I suffer they [the fellowship] suffer with me’ [Luther].
We recognize, then, that only as we are within the fellowship can we be alone, and only he that is alone can live in the fellowship. Only in the fellowship do we learn to be rightly alone and only in aloneness do we learn to live rightly in the fellowship. It is not as though the one preceded the other; both begin at the same time, namely, with the call of Jesus Christ.
Each by itself has profound pitfalls and perils. One who wants fellowship without solitude plunges into the void of words and feelings, and one who seeks solitude without fellowship perishes in the abyss of vanity, self-infatuation, and despair.
Let him who cannot be alone beware of community. Let him who is not in community beware of being alone.”
Dietrich BonhoefferLife Together: The Classic Exploration of Christian Community