God has willed that we should seek and find His living Word in the witness of a brother, in the mouth of man. Therefore, the Christian needs another Christian who speaks God's Word to him. He needs him again and again when he becomes uncertain or discouraged, for by himself he cannot help himself without belying the truth. He needs his brother man as a bearer and proclaimer of the divine word of salvation. He needs his brother solely because of Jesus Christ. The Christ in his own heart is weaker than the Christ in the word of his brother; his own heart is uncertain, his brother's is sure.
And that also clarifies the goal of all Christian community: they meet one another as bringers of the message of salvation. As such, God permits them to meet together and gives them community. Their fellowship is founded solely upon Jesus Christ and this "alien righteousness." All we can say, therefore, is: the community of Christians springs solely from the Biblical and Reformation message of the justification of man through grace alone; this alone is the basis of the longing of Christians for one another.
