17. 1 The churches that separated from Roman Catholicism during the Reformation disagree with each other on many points of theology, but there are four points on which they all agree: there is a trinity of persons in the Divine; original sin came from Adam; Christ’s merit is assigned to us; and we are justified by faith alone.

38. I would like to add to this a few sentences from the Belgic Confession, which was officially adopted at the Synod of Dort:

I believe in one God, who is one single essence, in whom there are three persons, really, truly, and eternally distinct according to their incommunicable properties — namely, Father, Son, and Holy Spirit. The Father is the cause, origin, and source of all things, visible as well as invisible. The Son is the Word, the wisdom, and the image of the Father. The Holy Spirit is the eternal power and might, proceeding from the Father and the Son. But it must be said that this teaching far surpasses human understanding; we are waiting to know it fully in heaven. (Belgic Confession [8, 9])