5:8 There are three that bear testimony. For notes on how these three (the water, blood, and Spirit) bear witness, see 1Jo 5:6.
These three agree in one. They bear testimony to the same end.
5:8 And there are three that testify in heaven - The testimony of the Spirit, the water, and the blood, is by an eminent gradation corroborated by three, who give a still greater testimony. The Father - Who clearly testified of the Son, both at his baptism and at his transfiguration. The Word - Who testified of himself on many occasions, while he was on earth; and again, with still greater solemnity, after his ascension into heaven, Rev 1:5; Rev 19:13. And the Spirit - Whose testimony was added chiefly after his glorification, 1Jo 2:27; Joh 15:26; Ac 5:32; Ro 8:16. And these three are one - Even as those two, the Father and the Son, are one, John 10:30. Nothing can separate the Spirit from the Father and the Son. If he were not one with the Father and the Son, the apostle ought to have said, The Father and the Word, who are one, and the Spirit, are two. But this is contrary to the whole tenor of revelation. It remains that these three are one. They are one in essence, in knowledge, in will, and in their testimony. It is observable, the three in the one verse are opposed, not conjointly, but severally, to the three in the other: as if he had said, Not only the Spirit testifies, but also the Father, John 5:37; not only the water, but also the Word, John 3:11,John 10:41; not only the blood, but also the Holy Ghost, John 15:26, and c. It must now appear, to every reasonable man, how absolutely necessary the eighth verse is 1Jo 5:8. St. John could not think of the testimony of the Spirit, and water, and blood, and subjoin, The testimony of God is greater, without thinking also of the testimony of the Son and Holy Ghost; yea, and mentioning it in so solemn an enumeration. Nor can any possible reason be devised, why, without three testifying in heaven, he should enumerate three, and no more, who testify on earth. The testimony of all is given on earth, not in heaven; but they who testify are part on earth, part in heaven. The witnesses who are on earth testify chiefly concerning his abode on earth, though not excluding his state of exaltation: the witnesses who are in heaven testify chiefly concerning his glory at God's right hand, though not excluding his state of humiliation. The seventh verse , therefore, with the sixth, 1Jo 5:7,6 contains a recapitulation of the whole economy of Christ, from his baptism to pentecost; the eighth, 1Jo 5:8 the sum of the divine economy, from the time of his exaltation. Hence it farther appears, that this position of the seventh 1Jo 5:7,8 and eighth verse s, which places those who testify on earth before those who testify in heaven, is abundantly preferable to the other, and affords a gradation admirably suited to the subject.
5:6-8 We are inwardly and outwardly defiled; inwardly, by the power and pollution of sin in our nature. For our cleansing there is in and by Christ Jesus, the washing of regeneration and the renewing of the Holy Ghost. Some think that the two sacraments are here meant: baptism with water, as the outward sign of regeneration, and purifying from the pollution of sin by the Holy Spirit; and the Lord's supper, as the outward sign of the shedding Christ's blood, and the receiving him by faith for pardon and justification. Both these ways of cleansing were represented in the old ceremonial sacrifices and cleansings. This water and blood include all that is necessary to our salvation. By the water, our souls are washed and purified for heaven and the habitation of saints in light. By the blood, we are justified, reconciled, and presented righteous to God. By the blood, the curse of the law being satisfied, the purifying Spirit is obtained for the internal cleansing of our natures. The water, as well as the blood, came out of the side of the sacrificed Redeemer. He loved the church, and gave himself for it, that he might sanctify and cleanse it with the washing of water by the word; that he might present it to himself a glorious church, Eph 5:25-27. This was done in and by the Spirit of God, according to the Saviour's declaration. He is the Spirit of God, and cannot lie. Three had borne witness to these doctrines concerning the person and the salvation of Christ. The Father, repeatedly, by a voice from heaven declared that Jesus was his beloved Son. The Word declared that He and the Father were One, and that whoever had seen him had seen the Father. And the Holy Ghost, who descended from heaven and rested on Christ at his baptism; who had borne witness to Him by all the prophets; and gave testimony to his resurrection and mediatorial office, by the gift of miraculous powers to the apostles. But whether this passage be cited or not, the doctrine of the Trinity in Unity stands equally firm and certain. To the doctrine taught by the apostles, respecting the person and salvation of Christ, there were three testimonies. 1. The Holy Spirit. We come into the world with a corrupt, carnal disposition, which is enmity to God. This being done away by the regeneration and new-creating of souls by the Holy Spirit, is a testimony to the Saviour. 2. The water: this sets forth the Saviour's purity and purifying power. The actual and active purity and holiness of his disciples are represented by baptism. 3. The blood which he shed: and this was our ransom, this testifies for Jesus Christ; it sealed up and finished the sacrifices of the Old Testament. The benefits procured by his blood, prove that he is the Saviour of the world. No wonder if he that rejects this evidence is judged a blasphemer of the Spirit of God. These three witnesses are for one and the same purpose; they agree in one and the same thing.