From a Catechetical Instruction on the Creed by Saint Cyril of Jerusalem, bishop On the creed

<blockquote>From a catechetical instruction on the Creed by Saint Cyril of Jerusalem, bishop On the creed

In learning and professing the faith, you must accept and retain only the Church’s present tradition, confirmed as it is by the Scriptures. Although not everyone is able to read the Scriptures, some because they have never learned to read, others because their daily activities keep them from such study, still so that their souls will not be lost through ignorance, we have gathered together the whole of the faith in a few concise articles.

Now I order you to retain this creed for you nourishment through life and never to accept any alternative, not even if I myself were to change and say something contrary to what I am now teaching, not even if some angel of contradiction, changed into an angel of light, tried to lead you astray. For even if we, or an angel from heaven, should preach to you a gospel contrary to that which you have now received, let him be accursed in your sight.

So for the present be content to listen to the simple words of the creed and to memorize them; at some suitable time you can find the proof of each article in the Scriptures. This summary of the faith was not composed at man’s whim; the most important sections were chosen from the whole Scripture to constitute and complete a comprehensive statement of the faith. Just as the mustard seed contains in a small grain many branches, so this brief statement of the faith keeps in its heart, as it were, all the religious truth to be found in Old and New Testament alike. That is why, my brothers, you must consider and preserve the traditions you are now receiving. Inscribe them across your heart.

Observe them scrupulously, so that no enemy may rob any of you in an idle and heedless moment; let no heretic deprive you of what has been given to you. Faith is rather like depositing in a bank the money entrusted to you, and God will surely demand an account of what you have deposited. In the words of the Apostle: I charge you before the God who gives life to all things, and before Christ who bore witness under Pontius Pilate in a splendid declaration, to keep unblemished this faith you have received, until the coming of our Lord Jesus Christ.

You have now been given life’s great treasure; when he comes, the Lord will ask for what he has entrusted to you. At the appointed time he will reveal himself, for he is the blessed and sole Ruler, King of kings, Lord of lords. He alone is immortal, dwelling in unapproachable light. No man has seen or ever can see him. To him be glory, honor and power for ever and ever. Amen.

The Nicene Creed

I believe in one God,
the Father almighty,
maker of heaven and earth,
of all things visible and invisible.

I believe in one Lord Jesus Christ,
the Only Begotten Son of God,
born of the Father before all ages.
God from God, Light from Light,
true God from true God,
begotten, not made, consubstantial with the Father;
through him all things were made.
For us men and for our salvation
he came down from heaven,
and by the Holy Spirit was incarnate of the Virgin Mary,
and became man.
For our sake he was crucified under Pontius Pilate,
he suffered death and was buried,
and rose again on the third day
in accordance with the Scriptures.
He ascended into heaven
and is seated at the right hand of the Father.
He will come again in glory
to judge the living and the dead
and his kingdom will have no end.

I believe in the Holy Spirit, the Lord, the giver of life,
who proceeds from the Father and the Son,
who with the Father and the Son is adored and glorified,
who has spoken through the prophets.

I believe in one, holy, catholic and apostolic Church.
I confess one Baptism for the forgiveness of sins
and I look forward to the resurrection of the dead
and the life of the world to come. Amen.