Whosoever will be saved, it is needful before all things that he hold the Catholic faith.
The which unless each one shall keep whole, and inviolate ; he shall without doubt eternally perish.
And this is the Catholic faith, that we worship one God in Trinity ; and Trinity in unity.
Neither confounding the persons, nor yet separating the substance.
For there is one person of the father, another of the son, another of the holy Ghost.
But the God-head of the father, and of the son, and of the holy Ghost is one, equal glory, co-eternal Majesty.
Such as the father is, such is the son, such is the holy Ghost.
The Father increat, the Son increat, the holy Ghost increat.
The Father immeasurable, the Son immeasurable, the holy Ghost immeasurable.
The Father eternal, the Son eternal, the holy Ghost eternal.
And yet not three eternals, but one eternal.
Like as there are not three increat, nor three immeasurables ; but one increat, and one immeasurable.
Even so the Father almighty, the son almighty, the holy Ghost almighty.
And yet not three almighties, but one almighty.
So the Father is God, the Son is God, and the holy Ghost God.
And yet there there is not three Gods, but there is one God.
So the Father is Lord, the Son Lord, and the holy Ghost Lord.
And yet there are not three Lords, but there is one Lord.
For that even as we are compelled by Christian verity to acknowledge each persons severally to be God and Lord : even so we are forbidden by Catholic Religion to say there are three Gods or Lords.
The Father is made of none, neither created, nor begotten.
The Son is of the Father alone ; neither made, nor created, but begotten.
The holy Ghost of the Father, and the Son ; not made, nor created, nor begotten, but proceeding.
There is therefore one Father, not three Fathers ; one son, not three sons ; one holy Ghost, not three holy Ghosts.
And yet in this Trinity nothing is before, nor after, nothing greater or lesser ; but the whole three persons are coeternal, and coequal.
So as throughout all, as is above said ; the Unity in Trinity, and the Trinity in Unity is to be worshipped.
He therefore that will be saved, let him so think of the trinity.
But necessary it is unto eternal salvation that he faithfully believe the incarnation also of our Lord Jesus Christ.
The right faith therefore is that we believe and confess that our Lord Jesus Christ, the Son of God, is God and man.
God he is of the substance of the Father begotten before all worlds ; and man of the substance of his mother born in the world.
Perfect God, and perfect man ; of a reasonable soul, and human flesh subsisting.
Equal to the Father according to Godhead ; less than the Father according to manhood.
Who although he be God and man, yet not two, but he is one Christ.
One not by conversion of God-head into flesh, but by taking of manhood into God.
One altogether, not by confusion of substance, but by unity of person.
For like as the reasonable soul and flesh is one man ; so God and man is one Christ.
Who suffered for our salvation, descended into hell, rose again the third day from the dead.
He ascended into heaven, sitteth at the right hand of God the Father almighty, from thence he shall come to judge the quick and the dead.
At whose coming all men are to rise with their bodies, and are to render account of their own deeds.
And they which have done good shall go into life everlasting ; but they which have done evil, into everlasting fire.
This is the Catholic faith, which unless every one shall faithfully and firmly believe, he cannot be saved.
Transcribed by E.T.H. III from The Primer, or Office of the Blessed Virgin Mary. According to the Reformed Latin ; with like graces Priviledged. At Antwerpe, Printed by Balthasar Moret. 1658.