"I. First, then, ADDITIONS TO THE CHURCH, WHAT ABOUT THEM? “The Lord added to their number daily those who were being saved.”
It seems to have been the custom in the earliest times for persons who had been converted to Christ to join themselves with the church of Jesus Christ.
From that fact, I feel persuaded that they did not conceal their convictions. It is a strong temptation with many to say, “I have believed in Jesus, but that is a matter between God and my own soul, there is no need that I should tell this to others. Can't I quietly go to heaven and be a Nicodemus, or a Joseph of Arimathea?” To which I reply, Yes, you can quietly go to heaven, and we hope you will do so, but that is a different thing from being cowardly and ashamed of Christ. We will not object to your being a Nicodemus if you will go with him when he carries spices to the grave of Jesus; and you may be a Joseph of Arimathea if you will attend him when he goes boldly to Pilate and begs for the body of Jesus. Neither of these two brethren were cowards after the cross had been set up before their eyes, neither were they ashamed to identify themselves with the crucified Christ. Follow them, not in the infancy of their love, but in its more mature days. Remember, dear friends, the promise of the gospel runs like this, “He that believes in his heart, and confesses Christ with his mouth, will be saved.” Do not, I charge you, neglect half of the command! The gospel commission which we have received is this: “Go into all the world and preach the good news to all creation. Whoever believes and is baptized will be saved.” That is the message as we find it, we did not insert the clause concerning baptism, neither do we dare to leave it out, or advise you to neglect it. I give you the very words of the Savior. Do not, therefore, divide the gospel command in order to throw half of it away, but believe it all and affirm your belief, and be added to the church.
It is quite clear, too, that believers in those days did not try to go to heaven alone. However, there has been a great deal said in these days about simply being a Christian and not joining any particular church, this is clearly a piece of hypocrisy, and in all cases a mistake.
This idea of not joining any one particular church, and instead simply belonging to the “church at large” is often advocated in the name of unity, and yet it is clear to everyone that it is just the opposite of unity, and is intended to put an end to all visible church fellowship. The good people mentioned in our text immediately join the church of the Living God in Jerusalem. I dare say that even in those days, had they criticized the church, they would have found faults in her, certainly within a few weeks there were great faults that had to be remedied; but these converts felt that the group of Christians at Jerusalem was indeed the true church of Jesus Christ, and, therefore, they joined it. All of you can find true churches of Jesus Christ if you choose to look for them. If you wait for a perfect church, you must wait until you get to heaven; and even if you could find a perfect church on earth, I am sure they would not admit you to their fellowship, for you yourself are not perfect. Find those people who are nearest to the Scriptures, who hold the truth in doctrine and in practice, and are most like the apostolic church, and then join them, and you will be blessed for it. Consider the matter, and reflect that if it would be right for you to remain out of church fellowship, it must be right for every other believer to remain in the same condition, and then there would be no visible church on earth at all, and no body of people banded together to maintain and teach Christian commands and practices. Christian fellowship, especially the celebration of the Lord’s Supper, and the maintenance of an evangelistic ministry, would become an impossibility, if no one openly declared the Savior's cause. Act then according to your duty, and if you are a Christian, join with Christians; if you love the Master, love the servants; if you love the Captain, unite with the army, and join that regiment of it which you think adheres the closest to the Master's word."
The above excerpt was taken from C.H. Spurgeon's sermon titled "Additions to the Church". You can read the complete sermon here: www.biblebb.com/files/spurgeon/1167.htm
