In the church and Not of it - Henri Nouwen

Another great bit from Henri Nouwen:

Being in the Church, Not of It

Often we hear the remark that we have live in the world without being of the world. But it may be more difficult to be in the Church without being of the Church. Being of the Church means being so preoccupied by and involved in the many ecclesial affairs and clerical "ins and outs" that we are no longer focused on Jesus. The Church then blinds us from what we came to see and deafens us to what we came to hear. Still, it is in the Church that Christ dwells, invites us to his table, and speaks to us words of eternal love.

Being in the Church without being of it is a great spiritual challenge.