In the Catholic catechism it is said: "Quels sont ceux qui sont hors de l'église? Les infidèles, les hérétiques, les schismatiques." [Footnote: "Who are those who are outside the Church? Infidels, heretics, and schismatics.">[ The so-called Greek Orthodox are regarded as schismatics, the Lutherans as heretics; so that according to the Catholic catechism the only people in the Church are Catholics.
In the so-called Orthodox catechism it is said: By the one Christian Church is understood the Orthodox, which remains fully in accord with the Universal Church. As for the Roman Church and other sects (the Lutherans and the rest they do not even dignify by the name of church), they cannot be included in the one true Church, since they have themselves separated from it.
According to this definition the Catholics and Lutherans are outside the Church, and there are only Orthodox in the Church.
The Lutheran catechism says: "Die wahre kirche wird darein erkannt, dass in ihr das Wort Gottes lauter und rein ohne Menschenzusätze gelehrt and die Sacramente treu nach Christi Einsetzung gewahret werden." [Footnote: "The true Church will be known by the Word of God being studied clear and unmixed with man's additions and the sacraments being maintained faithful to Christ's teaching.">[
According to this definition all those who have added anything to the teaching of Christ and the apostles, as the Catholic and Greek churches have done, are outside the Church. And in the Church there are only Protestants.
The Catholics assert that the Holy Ghost has been transmitted without a break in their priesthood. The Orthodox assert that the same Holy Ghost has been transmitted without a break in their priesthood. The Arians asserted that the Holy Ghost was transmitted in their priesthood (they asserted this with just as much right as the churches in authority now). The Protestants of every kind—Lutherans, Reformed Church, Presbyterians, Methodists, Swedenborgians, Mormons—assert that the Holy Ghost is only present in their communities. If the Catholics assert that the Holy Ghost, at the time of the division of the Church into Arian and Greek, left the Church that fell away and remained in the one true Church, with precisely the same right the Protestants of every denomination can assert that at the time of the separation of their Church from the Catholic the Holy Ghost left the Catholic and passed into the Church they professed. And this is just what they do.
Every church traces its creed through an uninterrupted transmission from Christ and the Apostles. And truly every Christian creed that has been derived from Christ must have come down to the present generation through a certain transmission. But that does not prove that it alone of all that has been transmuted, excluding all the rest, can be the sole truth, admitting of no doubt.
Every branch in a tree comes from the root in unbroken connection; but the fact that each branch comes from the one root, does not prove at all that each branch was the only one. It is precisely the same with the Church. Every church presents exactly the same proofs of the succession, and even the same miracles, in support of its authenticity, as every other. So that there is but one strict and exact definition of what is a church (not of something fantastic which we would wish it to be, but of what it is and has been in reality)—a church is a body of men who claim for themselves that they are in complete and sole possession of the truth. And these bodies, having in course of time, aided by the support of the temporal authorities, developed into powerful institutions, have been the principal obstacles to the diffusion of a true comprehension of the teaching of Christ.
It could not be otherwise. The chief peculiarity which distinguished Christ's teaching from previous religions consisted in the fact that those who accepted it strove ever more and more to comprehend and realize its teaching. But the Church doctrine asserted its own complete and final comprehension and realization of it.
Strange though it may seem to us who have been brought up in the erroneous view of the Church as a Christian institution, and in contempt for heresy, yet the fact is that only in what was called heresy was there any true movement, that is, true Christianity, and that it only ceased to be so when those heresies stopped short in their movement and also petrified into the fixed forms of a church.