A reason why the Holy Ghost is called "the seven spirits" is found in that remarkable sevenfold action by which He works upon the soul of a man, for though the influences of the Holy Ghost are indeed very many, and the enumeration of them might be extended very far, they do range themselves, with a very singular exactness, under seven heads.
I. To open the heart like Lydia's; to show us what we are; to make us feel sin, and specially sins done against Christ that is the Spirit's first work.
II. The Spirit shows us Christ. Every day's experience proves that we can only know Christ by the Holy Spirit. There is no other power that ever can or will reveal Christ to the sinner's soul.
III. The Spirit comforts. I place this office here, for all the Spirit's comfortings have to do with Jesus Christ. I believe the Holy Ghost never comforts a man but through Christ. He never uses the commonplaces of men's consolation; He never deals in generalities: He shows you that Jesus loves you; He shows you that Jesus died for you, that God has forgiven you. So He makes Christ fill an empty place. He exhibits the exceeding loveliness and sufficiency of Christ's person.
IV. After this the Spirit proceeds to teach the man, who is now become a child of God. He fits the heart to the subject, and the subject to the heart. Hence the marvellous power and the singular sweetness there is when you sit under the Holy Spirit's teaching.
V. For where He teaches, there He sanctifies. There is never a good desire but it was He who prompted it, and never a right thought but it was He who imparted it. It is He who gives the higher motive, and makes the heart begin to point to the glory of God.
VI. He is the Intercessor who "maketh intercession for us with groanings which cannot be uttered."
VII. He seals the soul which He has made His temple. As some proprietor when he goes away puts his mark upon his jewels, so the Holy Ghost fastens you to Christ, that nothing may ever divide you. He gives you a comforting assurance that you are a child of God; He makes in the soul a little sanctuary of peace and love.
J. Vaughan, Fifty Sermons,8th series, p. 156.