There are four steps: (1) "Go and tell him his fault between thee and him alone." Do not wait till he comes to apologise, as is the rule laid down by the rabbis, but go to him at once. Do not think of your own dignity. Think only of your Master's honour and your brother's welfare. How many troubles, how many scandals might be prevented in the Christian Church, if this simple direction were faithfully and lovingly carried out! In some cases, however, this may fail; and then the next step is: (2) "Take with thee one or two more, that in the mouth of two or three witnesses every word may be established." The process here passes from private dealing; still there must be no undue publicity. If the reference to two or at most three (see R.V.) fail, it becomes a duty to (3) "tell it unto the church," in the hope that he may submit to its decision. If he decline, there is nothing left but (4) excommunication: "Let him be unto thee as an heathen man and a publican." The mention of church censure naturally leads to a declaration of the power vested in the church in the matter of discipline. Our Lord had already given such a declaration to Peter alone; now it is given to the church as a whole in its collective capacity: "Verily I say unto you, Whatsoever ye shall bind on earth shall be bound in heaven: and whatsoever ye shall loose on earth shall be loosed in heaven." But the question comes: What is the church in its collective capacity? If it is to have this power of discipline, of the admission and rejection of members--a power which, rightly exercised on earth, is ratified in heaven--it is important to know something as to its constitution. This much, indeed, we know: that it is an assembly of believers. But how large must the assembly be? What are the marks of the true church?