As if the apostle had said, "As there are three in heaven who have given us their testimony to the divinity of Christ and his doctrine here on earth, so there are three witnesses here below testifying the same thing, namely, the Spirit, in the preaching of the gospel, and in the souls of believers: the water, or sacrament of baptism, wherein we are baptized in the name of the Son, as well as of the Father and the blood, that is, the death of Christ, and the sufferings of those who have sealed this truth with their blood; all these do give testimony on earth to Christ's divinity from heaven."
Note here, That though much of these two verses be left out in many ancient copies of the Bible, as the learned Dr. Hammond takes notice, yet in copies more ancient they are found, and we have more reason to believe that the Arians left them out, that that the orthodox put them in, other texts that assert the truth being so abused. It has been the common course of heretics to disown the authority of such texts as do gall and pinch them.
Note farther, That the doctrine of the blessed Trinity stands built upon holy Scripture, as a firm basis, and impregnable rock, and the doctrine of the Anti-Trinitarians falls to the ground like Dagon before the ark.
Lord, let our understandings evermore stoop and yield to this divine revelation, though it contains such a doctrine as doth exceed the comprehension of human reason.