Dietrich Bonhoeffer, Life Together:
Christian Community is like the Christian’s sanctification. It is a gift of God which we cannot claim. Only God knows the real state of our fellowship, of our sanctification. What may appear weak and trifling to us may be great and glorious to God. Just as the Christian should not be constantly feeling his spiritual pulse, so too, the Christian community has not been given to us by God for us to be constantly taking its temperature. The more thankfully we daily receive what is given to us, the more surely and steadily will fellowship increase and grow from day to day as God pleases.
HT: James Grant