It may be true that this idea, though central with St. John, is subordinate with St. Paul; but it is distinctly recognized—just as, conversely, the doctrine of the Atonement, though clearly implied, is less prominent with St. John than with St. Paul. The close resemblance between the teaching of St. John and St. Paul does not end with the exposition of the character and mission of the incarnate Son; it is exhibited no less in what is said about the Holy Spirit. The teaching of the Fourth Gospel on the subject of the Spirit repeats in a remarkable way certain leading features in its teaching about the Son. The Father is in the Son (as we have seen), and the Son is one with the Father; and yet the Son is distinct (in the language of later theology, a distinct Person) from the Father; and in like manner the Paraclete is ‘another’ than the Son (xiv. 16), and is sent by the Son (xv. 26; xvi. 7); and yet in the coming of the Spirit the Son Himself returns to His people (xiv. 18; cf. iii. 28). Here again the parallel is quite remarkable between St. Paul and St. John. If we take a passage like Rom. viii. 9-11 we see that, in this same connexion of the work of the indwelling Spirit among the faithful, He is described at one moment as the Spirit of God, at another as the Spirit of Christ, and almost in the same breath we have the phrase, ‘If Christ is in you’ as an equivalent for ‘If the Spirit of Christ is in you.’ The latter phrase is fuller and more exact, but with St. Paul, as well as with St. John, it is Christ Himself who comes to His own in His Spirit. No writer that I know has worked out the whole of this relation with more philosophical and theological fulness and accuracy than Dr. Moberly in his _Atonement and Personality_. And I am tempted to quote one short passage of his (where I should like to quote many), because it seems to me to sum up in few words the fundamental teaching of St. Paul and St. John. ‘Christ in you, or the Spirit of Christ in you; these are not different realities; but the one is the method of the other. It is in the Person of Christ that the Eternal God is revealed in manhood to man. It is in the Person of His Spirit that the Incarnate Christ is Personally present within the spirit of each several man. The Holy Ghost is mainly revealed to us as the Spirit _of the Incarnate_[65].’ It is to the language of St. Paul and St. John that we go for proof that the Holy Spirit is a Person; but it is also from their language that we learn how intimately He is associated with the other Divine Persons. We are led up to what is in later theological language called the doctrine of the Holy Trinity. It is well known that some of the most important data for this doctrine are derived from the Fourth Gospel, especially from the last discourse. And whatever is found in St. John may be paralleled in substance from St. Paul. 3. Comparison with the Synoptic Gospels.