139. (1) The Holy Spirit is the Divine Truth and also the Divine Energy and Operation proceeding from the one God in whom is the Divine Trinity, that is, from the Lord God the Savior. The Holy Spirit signifies strictly the Divine truth, thus also the Word; and in this sense the Lord Himself is the Holy Spirit. But since in the church at this day the Divine operation, which is actually justification, is what is meant by the Holy Spirit, this is here taken to be the Holy Spirit, and is what is chiefly treated of. This is done for the further reason that the Divine operation is effected by means of the Divine truth which goes forth from the Lord; and that which goes forth is of one and the same essence with Him from whom it goes forth, as the three things, soul, body, and what goes forth from them, together constitute one essence, which in man is purely human, but in the Lord is Divine and Human at the same time; and these after glorification are united as what is prior is with its posterior, or as essence is with its form. Thus the three essentials, called Father, Son, and Holy Spirit, are one in the Lord.  That the Lord is the Divine truth itself, or the Divine verity, has been shown above. That the Holy Spirit is the same is manifest from the following passages:
There shall go forth a Shoot out of the stock of Jesse; the spirit of Jehovah shall rest upon Him, the spirit of wisdom and of understanding, the spirit of counsel and might; and He shall smite the land with the rod of His mouth, and with the breath of His lips shall He slay the wicked; and righteousness shall be the girdle of His loins, and truth the girdle of His thighs (Isa. 11:1, 2, 4, 5).
He shall come like a narrow flood; the Spirit of Jehovah shall lift up a standard against him; then a Redeemer shall come to Zion (Isa. 59:19, 20).
The spirit of the Lord Jehovih is upon Me; therefore Jehovah hath anointed Me, He hath sent Me to preach good tidings unto the poor (Isa. 61:1; Luke 4:18).
This is My covenant; My spirit that is upon thee, and My words shall not depart out of thy mouth from henceforth and for ever (Isa. 59:21).
 As the Lord is truth itself, all that goes forth from Him is truth, and this is what is meant by the Comforter, who is also called the Spirit of truth and the Holy Spirit. This is evident from the following passages:
I tell you the truth: It is expedient for you that I go away; for if I go not away the Comforter will not come unto you, but if I go away I will send Him unto you (John 16:7).
When He, the Spirit of truth, is come, He will guide you into all truth for He will not speak from Himself, but whatsoever things He shall hear shall He speak (John 16:13).
He shall glorify Me; for He shall take of Mine and shall declare it unto you. All things whatsoever the Father hath are Mine therefore said I that He shall take of Mine and shall declare it unto you (John 16:14, 15).
I will ask the Father to give you another Comforter, the Spirit of truth; whom the world cannot receive because it seeth Him not, neither knoweth Him; but ye know Him, for He abideth with you and shall be in you. I will not leave you orphans; I come to you: and ye shall see Me (John 14:16-19).
When the Comforter is come whom I will send unto you from the Father, the Spirit of truth, He shall bear witness of Me (John 15:26).
He is called the Holy Spirit (John 14:26).
 That by "the Comforter" or "the Holy Spirit" the Lord meant Himself, is evident from His words, that the world had not yet known Him:
But ye know Him; I will not leave you orphans; I come to you; ye shall see Me (John 14:17-19);
and in another passage:
Lo I am with you always, even unto the consummation of the age (Matthew 27:20);
also from these words, "He shall not speak from Himself," but "He shall take of Mine."