If, then, on the ground of our humanity we are cautioned against separating ourselves, because by so doing we set our teeth against all sound wisdom, on the ground of our Christianity we must be warned not to separate ourselves, because that means to harden our hearts against the faith itself. When we say to ourselves, "We will live our Christian life alone," that is equivalent to saying, "We will not live the Christian life at all." We do not know what the life in heaven may be,--though from the casual glimpses we obtain of it, we should say that it is a great social gathering, at which we shall sit down with Abraham and all the saints of God, a kind of marriage festivity to celebrate the union of the Lord with His bride,--but it is plain that the Christian life, as it is revealed to us here, _must be the life of a community_, for it is likened to a vine, from which all dead branches are cut off, and plainly all cut-off branches are dead.
"But," say many people amongst us, "we put our faith in the Lord Jesus Christ; we trust to Him; why should you impose any further conditions?" Do they put their faith in Him? Does not faith imply obedience? Did He not require His disciples to be united in a fellowship, and did He not give His body and His blood as a symbol of this fellowship, and command them to take the symbols in remembrance of Him until He comes? Are these isolated believers obeying Him, or are they not cutting at the root of His glorious purpose of human fellowship in the Divine Head? And if they are thus breaking His expressed commandment, has He not warned them that He will say, "I never knew you, depart from Me," although they have taught in His name, and even cast out devils and done many wonderful works?
And in thus reminding you of our Lord's thought, I am not speaking only of what we call the fellowship of the Church; for there are many who are merely nominal members of the Church, and though their names are enrolled they "separate themselves" and live the life of unhallowed isolation, just as they did before they professedly entered into the Christian society. This is a larger question than that of Church membership; Church membership derives its vast importance from being a part of this larger question. Will you, therefore, let me close with a personal appeal addressed to each one of you?
You know that the Son of Man would make men one; you know that He calls His disciples into a holy family of mutual love and service, so that men may know that they are His, and may recognise Him because they love one another. Are you venturing to disregard His commandment and to frustrate His will by separating yourself for your own desire? have you fallen out of all relations with His family, so that the sonship, the brotherhood, the friendship, the fatherhood, the citizenship, of the heavenly kingdom are as good as meaningless to you? If so, may I say in the words of the text, you are setting "your teeth against all sound wisdom"?