Institutio vera de praecipuis fidei articulis

Thus, in the only-begotten Son of God, the Word of God original: "Sermo Deus", all things are eternal, infinite, and omnipotent. He subsists equally with the Father in the form of God, and he has worked in cooperation with the Father through a positive act for these reasons. First, because he is called the Word, God, only-begotten of the Father, the character and splendor of the glory of the Father from the beginning, gone forth from eternal days, born. Proverbs 8; Wisdom 7, 8, 9; Ecclesiastes 24; John 5, 6.

Second, because he is called the first-born wisdom from the mouth of the Most High, and a power and glory of the Father likewise working in cooperation from the beginning. Whatever the Father does, the Son likewise wills and does the same. Third, because all things the Father has are the Son's. The Father and Son are one. If these things are of the Father—that he is Iehouah Jehovah, eternal, one, the only Creator, infinite, the God to be worshipped—they will also be of the Son. For all things of the Father are the Son's. John 8, 10, 15, 16, 17. Fourth, because he is called the Angel of the Covenant who appeared to the fathers, who spoke to Moses in the bush and on Mount Sinai, as Stephen testifies in Acts 7 and Exodus 3. The same Angel Iehouah Jehovah led the fathers in the desert. Exodus 13; 1 Corinthians 10. Iehouah Jehovah ascending on high, leading the fathers out of Egypt. Psalm 68, 95; Hebrews 3, 4.

Fifth, because Christ calls himself the resuscitator of souls and bodies. John 5, 11. This is the power and Deity of the one and only Iehouah Jehovah. Sixth, because he is called