The second danger that must be avoided is the tendency to define the church in such a way as would seem to eliminate or at least tone down the discrepancy or anomaly with which we are dealing. This again is a mistake. Our definition of the church must not be framed in terms of an accommodation by which we make provision, within our definition, for the inclusion of hypocrites, that is to say, of those who profess to be Christ’s but are not really his. Our definition of the church must be framed in terms of the constitutive principle, to wit, that the church consists of those who are united to Christ and are members of his body. It is the communion of saints. And it is precisely that body of believers in fellowship with Christ and with one another, associated together in the world in accordance with Christ’s institution, which is called in the New Testament “the church” and is what we often call the visible church. We may not abandon this constitutive principle, we may not accommodate our definition in order to make allowance for the fact that some make the profession who do not have the faith and who enter into the fellowship without the bond that constitutes it.*26
*26 It is very easy to fall into this kind of accommodation when we begin to apply the distinction between the church as invisible and the church as visible. And, indeed, it may appear to be necessary in order to avoid other pitfalls of the Romish doctrine of the church. In the esteem of the present writer this appears rather conspicuously in James Bannerman’s excellent work, The Church of Christ. His definition of the visible church is framed in terms that do not appear to be supported by New Testament usage (cf. op. cit. Vol. I, pp. 29ff). The terms in which Bannerman develops the distinction between visible and invisible and frames his definition of the visible church seem to provide us with a very simple and effective polemic against Rome. The controversy with Rome must, of course, be unabated, but it does not appear to be sound to conduct this controversy on the basis of a definition which does not find its counterpart in the Biblical usage with reference to the church.
I Cor. 1:1, 2… provides us with Paul’s concept of the church at Corinth, namely, those sanctified in Christ Jesus and called to be saints, and he does not conceive of the church in broader terms so as to distinguish between the church and those sanctified and called…
Paul recognised that there was old leaven in the church at Corinth, leaven which needed to be purged out. But when he addresses the church he does not address it as a community to be defined in terms of old leaven and new unleavened bread. He does not define the church in terms which would make allowance for both elements. No, he addresses the church as those sanctified in Christ Jesus, called to be saints, and who call upon the name of the Lord Jesus Christ…
It is true that hypocrites may secure admission to the church. As we have seen, the very administration which Christ has instituted for the admission of members allows for that. There are disciples who are not truly disciples, and there are branches in the vine which are not vitally and abidingly in the vine. But while we fully recognise this fact we must at the same time distinguish between the constitutive principle in terms of which the church is defined, on the one hand, and the de facto situation arising from the way in which Christ has chosen to administer the affairs of his church in the world, on the other. The inclusion and exclusion are in the hands of fallible men. This administration is of divine institution. Hence those who are not Christ’s gain admission.*27 Here is the anomaly. We have to recognise and contain it. It persists in its sharpness because we refuse to define the church in lower terms than the body of Christ and the communion of the saints. It is that definition that creates the anomaly and we may not revise the definition in order to relieve the tension…
*27 Cf. Calvin: Inst. IV, i, 7 and 8.
In refraining from the attempt to define the church in terms of an accommodation that will make allowance for the inclusion of hypocrites we are following the same lines as would have to be followed in defining the kingdom of God. We are not forgetful of the parables of the tares and the wheat and of the drag net. There is a mixture in the kingdom, and Christ will at the end gather out of his kingdom all things that offend and them which do iniquity. But we may not define the kingdom of God in terms of accommodation to this de facto situation. We must define it in terms of the rule and realm of righteousness, life, and peace.