Institutio vera de praecipuis fidei articulis

that the Father alone is the one only God, eternal,
Creator, infinite; and that the Son and the Holy Spirit
are not God, one only, eternal, creator, infinite,
to be adored.
Secondly, that Christ is only the son of man,
and not the Son of God, Jehovah, begotten of the
Father from eternity.
Thirdly, that Christ was not the Son of God from
eternity, that Christ from the beginning of the world
was not the savior, the liberator of the Fathers,
the angel of the covenant, the eternal Melchizedek,
without genealogy, without beginning and without
end, living, Hebrews 6, 7.
Fourthly, that the Holy Spirit is only the power of
God, not Jehovah, one God to be adored:
And that infants are not to be baptized: that the
fathers were not saved by actual reality from the
beginning of the world through Christ the mediator,
even before the coming of Christ in the flesh.
We have spoken more copiously about these
matters elsewhere. Since, therefore, I heard that you,
by the grace and providence of God, were elected, I
rejoiced vehemently. So that I, too, might instruct
you in the Lord from the mouth of the Lord, I
collected these most true institutions, which before
all else I wished to dedicate to you, so that I might
confound the blasphemies of the proud and the
followers of Francis Blandrata.