There was no “point” at which the Father began to beget the Son – just as there was no point at which the Father began to exist. The Father eternally existed; the Son is “eternally begotten” of the Father; the Holy Spirit “eternally proceeds” from the Father and Son. Eternal – existing always; no beginning and no end.
If we go by the literal wording: τὸν ἐκ τοῦ Πατρὸς γεννηθέντα πρὸ πάντων τῶν αἰώνων / et ex Patre natum ante ómnia sæcula, “
born/begotten of the Father before all the ages.” So yeah, the Son is apparently begotten before the world was created, before time even started.
The Council of Nicaea actually had an anathema at the conclusion of its creed:
But those who say: ‘There was a time when he was not;’ and ‘He was not before he was made;’ and ‘He was made out of nothing,’ or ‘He is of another substance’ or ‘essence,’ or ‘The Son of God is created,’ or ‘changeable,’ or ‘alterable’—they are condemned by the holy Catholic and Apostolic Church.
The first half of the
Athanasian Creed sums it up rather nicely, if a bit too repetitively:
Whosoever will be saved, before all things it is necessary that he hold the catholic faith. Which faith except every one do keep whole and undefiled; without doubt he shall perish everlastingly.
And the catholic faith is this: That we worship one God in Trinity, and Trinity in Unity; Neither confounding the Persons; nor dividing the Essence.
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 coeternal.
Such as the Father is; such is the Son; and such is the Holy Ghost.
The Father uncreated; the Son uncreated; and the Holy Ghost uncreated.
The Father unlimited; the Son unlimited; and the Holy Ghost unlimited.
The Father eternal; the Son eternal; and the Holy Ghost eternal.
And yet they are not three eternals; but one eternal.
As also there are not three uncreated; nor three infinites, but one uncreated; and one infinite.
So likewise the Father is Almighty; the Son Almighty; and the Holy Ghost Almighty.
And yet they are not three Almighties; but one Almighty.
So the Father is God; the Son is God; and the Holy Ghost is God.
And yet they are not three Gods; but one God.
So likewise the Father is Lord; the Son Lord; and the Holy Ghost Lord.
And yet not three Lords; but one Lord.
For like as we are compelled by the Christian verity; to acknowledge every Person by himself to be God and Lord; so are we forbidden by the catholic religion to say, there are three Gods, or three Lords.
The Father is made of none; neither created, nor begotten.
The Son is of the Father alone; not made, nor created; but begotten.
The Holy Ghost is of the Father and of the Son; neither made, nor created, nor begotten; but proceeding.
So there is one Father, not three Fathers; one Son, not three Sons; one Holy Ghost, not three Holy Ghosts.
And in this Trinity none is before, or after another; none is greater, or less than another.
But the whole three Persons are coeternal, and coequal.
So that in all things, as aforesaid; the Unity in Trinity, and the Trinity in Unity, is to be worshipped.
He therefore that will be saved, let him thus think of the Trinity.