First of all, they teach by the Scriptures that God is to be known by faith as One in divine substance, but three in persons, the Father, the Son, and the Holy Spirit. They teach that there is a distinction on the part of the persons, but as regards true essence and substance there is co-equality and no distinction. This is plainly attested by the Catholic faith, the Synod of Nicaea, and other decrees and articles in agreement with it, and also by the Confession or Symbol of Athanasius. . . . Moreover, they teach that this one true God, one in divine essence and blessed Trinity of persons, is always to be adored, worshipped and honored with the highest reverence, honor, and praise as Lord of all the highest King who reigns over all.

“The Bohemian Confession (1535)” IN REFORMED CONFESSIONS OF THE 16TH AND 17TH CENTURIES IN ENGLISH TRANSLATION, COMPILED WITH INTRODUCTIONS BY JAMES T. DENNISON, JR., LOC. 408.