Let us go within the cloud. Give me the tables of your heart; I will be your Moses, though this be a bold thing to say; I will write on them with the finger of God a new Decalogue. I will write on them a shorter method of salvation.
[...] I will baptize you and make you a disciple in the Name of the Father and of the Son and of the Holy Ghost; and These Three have One common name, the Godhead.
[...] Believe that all that is in the world, both all that is seen and all that is unseen, was made out of nothing by God, and is governed by the Providence of its Creator, and will receive a change to a better state.
Believe that evil has no substance or kingdom, either unoriginate or self-existent or created by God; but that it is our work, and the evil one’s, and came upon us through our heedlessness, but not from our Creator.
Believe that the Son of God, the Eternal Word, Who was begotten of the Father before all time and without body, was in these latter days for your sake made also Son of Man, born of the Virgin Mary ineffably and stainlessly….
Believe that in His own Person He was made at once entire Man and perfect God, for the sake of the entire sufferer, that He may bestow salvation on your whole being, having destroyed the whole condemnation of your sins.
Believe that He was impassible in His Godhead, passible in that which He assumed; as much Man for your sake as you are made God for His.
Believe that for us sinners He was led to death; was crucified and buried, so far as to taste of death; and that He rose again the third day, and ascended into heaven, that He might take you with Him who were lying low.
Believe that He will come again with His glorious Presence to judge the quick and the dead; no longer flesh, nor yet without a body, according to the laws which He alone knows of a more godlike body, that He may be seen by those who pierced Him, and on the other hand may remain as God without carnality.
Receive besides this the Resurrection, the Judgment and the Reward according to the righteous scales of God; and believe that this will be Light to those whose mind is purified (that is, God—seen and known) proportionate to their degree of purity, which we call the Kingdom of heaven.
Gregory Nazianzen (c.330-390): Oration 40, 45.