The Athanasian Creed. (A.D. 500-800.)
Whosoever will be saved: before all things it is necessary that he hold the Catholick Faith.
Which Faith, except every one do keep whole and undefiled: without doubt he shall perish everlastingly.
And the Catholick Faith is this: that we worship one God in Trinity, and Trinity in Unity;
Neither confounding the Persons: nor dividing the Substance.
For there is one Person of the Father, another of the Son: and another of the Holy Ghost.
But the Godhead of the Father, of the Son, and of the Holy Ghost, is all one: the Glory equal, the Majesty co-eternal.
Such as the Father is, such is the Son: and such is the Holy Ghost.
The Father uncreate, the Son uncreate: and the Holy Ghost uncreate.
The Father incomprehensible, the Son incomprehensible: and the Holy Ghost incomprehensible.