It may be that sometimes we think we would rather be content to say simply with S. John that "GOD is Love." And that is truly the simplest of Christian creeds. If we were able fully to understand it, it would be sufficient. "Holy Trinity, whatever else it may signify, is a mode of saying 'Holy Love.'" But as a matter of fact it is only through the revelation of the grace of the Lord Jesus Christ and the fellowship of the Holy Spirit that we can ever come to understand the love of GOD. In the Christian Gospel GOD is revealed first as Father, secondly as Sufferer, thirdly as the Spirit of eternally victorious Life: and it takes the whole threefold revelation to express with any fulness the rich wonder of what is meant by saying that GOD is Love. Our minds cannot help passing from the contemplation of the threefold character of GOD'S self-revelation to the thought of a certain threefoldness in GOD Himself. We have to find room and place for such a thought--the thought that GOD is _eternally_ Love, that He is _eternally_ Father, Son, and Spirit--and yet at the same time not depart from the fundamental Christian conviction that GOD is One. It is to be feared that many Christian people do sometimes come dangerously near to believing in three separate Gods, and what we call Unitarianism is a one-sided protest against such a tendency. GOD is indeed a unity: and so far Unitarianism is right. But Unitarianism is less than the full Christian faith in GOD, because it fails to do justice to the full riches of Christian experience, the many-sided wonder of GOD revealed in Christ, and made real to us here and now by the operation of the Spirit in our hearts. We are driven to say that GOD is not only One, but Three in One. Nevertheless, if any one finds the _theory_ of the Holy Trinity difficult let him not be overmuch dismayed. Let him learn to know GOD as Father and Jesus Christ as Lord and Saviour: let him learn to know the Holy Spirit as an energy of eternal life and inspiration in his heart. He will then be _in effect_ a Trinitarian believer, even though the theologians seem to him to talk a language which he does not understand: even though--to tell the truth--he is not greatly interested by what they say.