We had a whole thread on that and no one could show it anywhere. At least the modern understanding of it. Seriously, we had 10 pages and not a single passage saying that there was being called God who consisted of three persons.
This is the statement of faith from this forum.
Statement of Faith
The Nicene Creed
We believe in (Romans 10:8-10; 1John 4:15)
ONE God, (Deuteronomy 6:4, Ephesians 4:6)
the Father (Matthew 6:9)
Almighty, (Exodus 6:3)
Maker of Heaven and Earth, (Genesis 1:1)
and of all things visible and invisible. (Colossians 1:15-16)
And in ONE Lord Jesus Christ, (Acts 11:17)
the Son of God, (Mathew 14:33; 16:16)
the Only-Begotten, (John 1:18; 3:16)
Begotten of the Father before all ages. (John 1:2)
Light of Light; (Psalm 27:1; John 8:12; Matthew 17:2,5)
True God of True God; (John 17:1-5)
Begotten, not made; (John 1:18)
of one essence with the Father (John 10:30)
by whom all things were made; (Hebrews 1:1-2)
Who for us men and for our salvation (1Timothy 2:4-5)
came down from Heaven, (John 6:33,35)
and was incarnate of the Holy Spirit and the Virgin Mary, (Luke 1:35)
and became man. (John 1:14)
And was crucified for us (Mark 15:25; 1Cointhians 15:3)
under Pontius Pilate, (John 19:6)
and suffered, (Mark 8:31)
and was buried. (Luke 23:53; 1Corinthians 15:4)
And the third day He rose again, according to the Scriptures. (Luke 24:1 1Corinthians 15:4)
And ascended into Heaven, (Luke 24:51; Acts 1:10)
and sits at the right hand of the Father. (Mark 16:19; Acts 7:55)
And He shall come again with glory (Matthew 24:27)
to judge the living and the dead; (Acts 10:42; 2Timothy 4:1)
whose Kingdom shall have no end. (2 Peter 1:11)
And in the Holy Spirit, (John 14:26)
the Lord, (Acts 5:3-4)
the Giver of Life, (Genesis 1:2)
Who proceeds from the Father; (John 15:26)
Who with the Father and the Son together is worshipped and glorified; (Matthew 3:16-17)
Who spoke through the prophets. (1 Samuel 19:20 ; Ezekiel 11:5,13) In one, (Matthew 16: 18)
holy, (1 Peter 2:5,9)
catholic*, (Mark 16:15)
and apostolic Church. (Acts 2:42; Ephesians 2:19-22)
I acknowledge one baptism for the remission of sins**. (Ephesians 4:5; Acts 2:38)
I look for the resurrection of the dead, (John 11:24; 1Corinthians 15:12-49; Hebrews 6:2; Revelation 20:5)
and the life of the world to come. (Mark 10:29-30)
AMEN. (Psalm 106:48)
This is what we're supposed to hold to. I would bet dollars to doughnuts that if we did a survey of everyone on this forum I would be the only one who actually believes this. Maybe Sandman, I don't know what he believes. I'd bet everyone else believes this that came in the 5th century and is not in the Statement of Faith. There's big difference.
Athanasian Creed
Whoever desires to be saved should above all hold to the catholic faith.
Anyone who does not keep it whole and unbroken will doubtless perish eternally.
Now this is the catholic faith:
That we worship one God in trinity and the trinity in unity,
neither blending their persons
nor dividing their essence.
For the person of the Father is a distinct person,
the person of the Son is another,
and that of the Holy Spirit still another.
But the divinity of the Father, Son, and Holy Spirit is one,
their glory equal, their majesty coeternal.
What quality the Father has, the Son has, and the Holy Spirit has.
The Father is uncreated,
the Son is uncreated,
the Holy Spirit is uncreated.
The Father is immeasurable,
the Son is immeasurable,
the Holy Spirit is immeasurable.
The Father is eternal,
the Son is eternal,
the Holy Spirit is eternal.
And yet there are not three eternal beings;
there is but one eternal being.
So too there are not three uncreated or immeasurable beings;
there is but one uncreated and immeasurable being.
Similarly, the Father is almighty,
the Son is almighty,
the Holy Spirit is almighty.
Yet there are not three almighty beings;
there is but one almighty being.
Thus the Father is God,
the Son is God,
the Holy Spirit is God.
Yet there are not three gods;
there is but one God.
Thus the Father is Lord,
the Son is Lord,
the Holy Spirit is Lord.
Yet there are not three lords;
there is but one Lord.
Just as Christian truth compels us
to confess each person individually
as both God and Lord,
so catholic religion forbids us
to say that there are three gods or lords.
The Father was neither made nor created nor begotten from anyone.
The Son was neither made nor created;
he was begotten from the Father alone.
The Holy Spirit was neither made nor created nor begotten;
he proceeds from the Father and the Son.
Accordingly there is one Father, not three fathers;
there is one Son, not three sons;
there is one Holy Spirit, not three holy spirits.
Nothing in this trinity is before or after,
nothing is greater or smaller;
in their entirety the three persons
are coeternal and coequal with each other.
So in everything, as was said earlier,
we must worship their trinity in their unity
and their unity in their trinity.
Anyone then who desires to be saved
should think thus about the trinity.
But it is necessary for eternal salvation
that one also believe in the incarnation
of our Lord Jesus Christ faithfully.
Now this is the true faith:
That we believe and confess
that our Lord Jesus Christ, God's Son,
is both God and human, equally.
He is God from the essence of the Father,
begotten before time;
and he is human from the essence of his mother,
born in time;
completely God, completely human,
with a rational soul and human flesh;
equal to the Father as regards divinity,
less than the Father as regards humanity.
Although he is God and human,
yet Christ is not two, but one.
He is one, however,
not by his divinity being turned into flesh,
but by God's taking humanity to himself.
He is one,
certainly not by the blending of his essence,
but by the unity of his person.
For just as one human is both rational soul and flesh,
so too the one Christ is both God and human.
He suffered for our salvation;
he descended to hell;
he arose from the dead;
he ascended to heaven;
he is seated at the Father's right hand;
from there he will come to judge the living and the dead.
At his coming all people will arise bodily
and give an accounting of their own deeds.
Those who have done good will enter eternal life,
and those who have done evil will enter eternal fire.
This is the catholic faith:
one cannot be saved without believing it firmly and faithfully.
If you can understand that....