Having considered the name, the essence, and the attributes of God, we will now turn to the mystery of all mysteries, the Holy Trinity. Throughout history all parties opposed to the truth have vehemently assaulted this article of faith. The ancient church has always confessed this article and defended it as a steadfast pillar of the truth against Sabellians, Arians, and Valentians. However much they may disagree with one another concerning other points of doctrine, they are united in their attack upon the Holy Trinity. Today we must defend this article against Socinians, Anabaptists, Socinian Arminians, and other proponents of error. Thanks be unto God who has always caused the church to be faithful to this truth. The church stands firm in this truth until this very day, and God will enable her to stand firm in it until the day of Christ, in spite of all who regret this.

WILHELMUS À BRAKEL, THE CHRISTIAN’S REASONABLE SERVICE, VOL. 1, 139.