For the sake of simplifying the treatment of the subject, I shall use the words "Spirit" and "Holy Spirit" instead of other terms used in the Scriptures. The Old Testament has eighty-eight distinct references to the Holy Spirit. In these references there are eighteen names applied. The New Testament refers to the Spirit two hundred and sixty-four times and uses thirty-nine names. Five names are common to both Testaments, which leaves fifty-two different appellatives for the Spirit. Seventeen appellatives express his relation to God, five his relation to the Son, five indicate his divine nature, seven describe his own character, while seventeen are used to indicate his relation to man. He is called the Holy Spirit, the Spirit of God, the Spirit of Christ, the Spirit of Jesus, the Spirit of his Son, of the Lord, of Truth, of Grace, of Holiness, of Glory, and of Adoption. He is called the Comforter, but this term never denotes his relation to man in general. It always describes a special relation to the apostles and their work. I wish my readers to bring to the perusal of this work the same spirit of earnestness that I shall put into the task of producing it. We read in the language of Jesus that "every sin and blasphemy shall be forgiven unto men; but the blasphemy against the Spirit shall not be forgiven" (Matt. 12:31). "And every one who shall speak a word against the Son of man, it shall be forgiven him: but unto him that blasphemeth against the Holy Spirit it shall not be forgiven" (Luke 12:10). Whatever else these terrible warnings may teach, they undoubtedly teach that the greatest care should be taken by those who venture to discuss this subject or investigate such discussion. Let both writer and reader therefore cast aside any flippancy of spirit, also any preconceptions or prejudices, and say like young Samuel of old: "Speak, Lord; thy servant heareth." The subject may be made plain or simple according to the manner we may treat it. If we view it in the light of psychological manifestation in our own hearts, or in the lives of those around us, which are ascribed to the Spirit, we shall find ourselves wandering in a maze of mystery. If we follow the word of God, which is the only source of knowledge, we shall find ourselves walking in a light that shall grow brighter as we proceed. It is impossible in a book the size of this to treat all the many passages that refer to the Holy Spirit, but we shall give those that have important bearing upon the subject. I THE SPIRIT AND THE OLD TESTAMENT