“To unite with the Church is to take one’s place among the followers of the Master. It is a public act. It is a confession of Christ before men. It is not a profession of superior saintliness. On the other hand, it is a distinct avowal of personal sinfulness and unworthiness. Those who seek admission into the church come as sinners, needing and accepting the mercy of God and depending upon the atonement of Christ for the forgiveness of their sins. They come confessing Christ. They have heard his call, “Follow me,” and have responded.
Uniting with the Church is taking a place among the friends of Christ; it is coming out from the world to be on Christ’s side. There are but two parties among men. “He who is not with me is against me,” said Jesus. The Church consists of those who are with Christ. This suggests one of the reasons why those who love Christ should take their place in the Church. By so doing they declare to all the world where they stand—and cast all the influence of their life and example on Christ’s side.”
J.R. Miller, Uniting with the Church