It seems, then, that we have to deal with a case something like the following: Certain doctrines come to us, professing to be Apostolic, and possessed of such high antiquity that, though we are only able to assign the date of their formal establishment to the fourth, or the fifth, or the eighth, or the thirteenth century, as it may happen, yet their substance may, for what appears, be coeval with the Apostles, and be expressed or implied in texts of Scripture. Further, these existing doctrines are universally considered, without any question, in each age to be the echo of the doctrines of the times immediately preceding them, and thus are continually thrown back to a date indefinitely early, even though their ultimate junction with the Apostolic Creed be out of sight and unascertainable. Moreover, they are confessed to form one body one with another, so that to reject one is to disparage the rest; and they include within the range of their system even those primary articles of faith, as the Incarnation, which many an impugner of the said doctrinal system, as a system, professes to accept, and which, do what he will, he cannot intelligibly separate, whether in point of evidence or of internal character, from others which he disavows. Further, these doctrines occupy the whole field of theology, and leave nothing to be supplied, except in detail, by any other system; while, in matter of fact, no rival system is forthcoming, so that we have to choose between this theology and none at all. Moreover, this theology alone makes provision for that guidance of opinion and conduct, which seems externally to be the special aim of Revelation; and fulfils the promises of Scripture, by adapting itself to the various problems of thought and practice which meet us in life. And, further, it is the nearest approach, to say the least, to the religious sentiment, and what is called _ethos_, of the early Church, nay, to that of the Apostles and Prophets; for all will agree so far as this, that Elijah, Jeremiah, the Baptist, and St. Paul are in their history and mode of life (I do not speak of measures of grace, no, nor of doctrine and conduct, for these are the points in dispute, but) in what is external and meets the eye (and this is no slight resemblance when things are viewed as a whole and from a distance),--these saintly and heroic men, I say, are more like a Dominican preacher, or a Jesuit missionary, or a Carmelite friar, more like St. Toribio, or St. Vincent Ferrer, or St. Francis Xavier, or St. Alphonso Liguori, than to any individuals, or to any classes of men, that can be found in other communions. And then, in addition, there is the high antecedent probability that Providence would watch over His own work, and would direct and ratify those developments of doctrine which were inevitable. 2.