The Logos is begotten of the Father in eternity and never had a beginning

In the first place, we must note that the nature of that deity which is in Christ in respect of His being the only-begotten Son of God is one thing, and that human nature which He assumed in these last times for the purposes of the dispensation (of grace) is another.  And therefore we have first to ascertain what the only-begotten Son of God is, seeing He is called by many different names, according to the circumstances and views of individuals.  For He is termed Wisdom, according to the expression of Solomon:  “The Lord created me—the beginning of His ways, and among His works, before He made any other thing; He founded me before the ages.  In the beginning, before He formed the earth, before He brought forth the fountains of waters, before the mountains were made strong, before all the hills, He brought me forth.”  He is also styled First-born, as the apostle has declared:  “who is the first-born of every creature.”  The first-born, however, is not by nature a different person from the Wisdom, but one and the same.  Finally, the Apostle Paul says that “Christ (is) the power of God and the wisdom of God.”

Let no one, however, imagine that we mean anything impersonal when we call Him the wisdom of God; or suppose, for example, that we understand Him to be, not a living being endowed with wisdom, but something which makes men wise, giving itself to, and implanting itself in, the minds of those who are made capable of receiving His virtues and intelligence.

…And who that is capable of entertaining reverential thoughts or feelings regarding God, can suppose or believe that God the Father ever existed, even for a moment of time, without having generated this Wisdom?  For in that case he must say either that God was unable to generate Wisdom before He produced her, so that He afterwards called into being her who formerly did not exist, or that He possessed the power indeed, but—what cannot be said of God without impiety—was unwilling to use it; both of which suppositions, it is patent to all, are alike absurd and impious:  for they amount to this, either that God advanced from a condition of inability to one of ability, or that, although possessed of the power, He concealed it, and delayed the generation of Wisdom.  Wherefore we have always held that God is the Father of His only-begotten Son, who was born indeed of Him, and derives from Him what He is, but without any beginning, not only such as may be measured by any divisions of time, but even that which the mind alone can contemplate within itself, or behold, so to speak, with the naked powers of the understanding.  And therefore we must believe that Wisdom was generated before any beginning that can be either comprehended or expressed.

Origen
On First Principles, Book I
Chapter II

The nature of deity belongs equally to the Father and the Son

…if, He were a being who was visible by nature, and merely escaped or baffled the view of a frailer creature, but because by the nature of His being it is impossible for Him to be seen.  And if you should ask of me what is my opinion regarding the Only-begotten Himself, whether the nature of God, which is naturally invisible, be not visible even to Him, let not such a question appear to you at once to be either absurd or impious, because we shall give you a logical reason.  It is one thing to see, and another to know:  to see and to be seen is a property of bodies; to know and to be known, an attribute of intellectual being.  Whatever, therefore, is a property of bodies, cannot be predicated either of the Father or of the Son; but what belongs to the nature of deity is common to the Father and the Son. Finally, even He Himself, in the Gospel, did not say that no one has seen the Father, save the Son, nor any one the Son, save the Father; but His words are:  “No one knoweth the Son, save the Father; nor any one the Father, save the Son.” By which it is clearly shown, that whatever among bodily natures is called seeing and being seen, is termed, between the Father and the Son, a knowing and being known, by means of the power of knowledge, not by the frailness of the sense of sight.  Because, then, neither seeing nor being seen can be properly applied to an incorporeal and invisible nature, neither is the Father, in the Gospel, said to be seen by the Son, nor the Son by the Father, but the one is said to be known by the other.

Origen
On First Principles, Book I
Chapter I

The Lord is the Word and the Spirit of God

But if we turn to the Lord, where also is the word of God, and where the Holy Spirit reveals spiritual knowledge, then the veil is taken away, and with unveiled face we shall behold the glory of the Lord in the holy Scriptures.

Origen
On First Principles, Book I
Chapter I

The Son and the Spirit are also God

Jesus Christ Himself, who came (into the world), was born of the Father before all creatures; that, after He had been the servant of the Father in the creation of all things—“For by Him were all things made”—He in the last times, divesting Himself (of His glory), became a man, and was incarnate although God, and while made a man remained the God which He was; that He assumed a body like to our own, differing in this respect only, that it was born of a virgin and of the Holy Spirit:  that this Jesus Christ was truly born, and did truly suffer, and did not endure this death common (to man) in appearance only, but did truly die; that He did truly rise from the dead; and that after His resurrection He conversed with His disciples, and was taken up (into heaven).

Then, Thirdly, the apostles related that the Holy Spirit was associated in honour and dignity with the Father and the Son.  But in His case it is not clearly distinguished whether He is to be regarded as born or innate, or also as a Son of God or not:  for these are points which have to be inquired into out of sacred Scripture according to the best of our ability, and which demand careful investigation.  And that this Spirit inspired each one of the saints, whether prophets or apostles; and that there was not one Spirit in the men of the old dispensation, and another in those who were inspired at the advent of Christ, is most clearly taught throughout the Churches.

Origen
On First Principles, Book I
Preface

God-Christ will judge according to works and then the millenium begins

Ye who are to be inhabitants of the heavens with God-Christ, hold fast the beginning, look at all things from heaven.  Let simplicity, let meekness dwell in your body.  Be not angry with thy devout brother without a cause, for ye shall receive whatever ye may have done from him.  This has pleased Christ, that the dead should rise again, yea, with their bodies; and those, too, whom in this world the fire has burned, when six thousand years are completed, and the world has come to an end.  The heaven in the meantime is changed with an altered course, for then the wicked are burnt up with divine fire.  The creature with groaning burns with the anger of the highest God.  Those who are more worthy, and who are begotten of an illustrious stem, and the men of nobility under the conquered Antichrist, according to God’s command living again in the world for a thousand years, indeed, that they may serve the saints, and the High One, under a servile yoke, that they may bear victuals on their neck.  Moreover, that they may be judged again when the reign is finished.  They who make God of no account when the thousandth year is finished shall perish by fire, when they themselves shall speak to the mountains.  All flesh in the monuments and tombs is restored according to its deed:  they are plunged in hell; they bear their punishments in the world; they are shown to them, and they read the things transacted from heaven; the reward according to one’s deeds in a perpetual tyranny.

Commodianus
Instructions of Commodianus
Chapter LXXX

God alone could teach how He wants to be prayed to

God alone could teach how he wished Himself prayed to. The religious rite of prayer therefore, ordained by Himself, and animated, even at the moment when it was issuing out of the Divine mouth, by His own Spirit, ascends, by its own prerogative, into heaven, commending to the Father what the Son has taught.

Tertullian
On Prayer
Chapter IX

The Logos brings a new kind of prayer

The Spirit of God, and the Word of God, and the Reason of God—Word of Reason, and Reason and Spirit of Word—Jesus Christ our Lord, namely, who is both the one and the other,—has determined for us, the disciples of the New Testament, a new form of prayer;

Tertullian
On Prayer
Chapter I

The revelation of the Trinity makes the New Covenant possible

What need would there be of the gospel, which is the substance of the New Covenant, laying down (as it does) that the Law and the Prophets lasted until John the Baptist, if thenceforward the Father, the Son, and the Spirit are not both believed in as Three, and as making One Only God? God was pleased to renew His covenant with man in such a way as that His Unity might be believed in, after a new manner, through the Son and the Spirit, in order that God might now be known openly, in His proper Names and Persons, who in ancient times was not plainly understood, though declared through the Son and the Spirit.

Tertullian
Against Praxeas
Chapter XXXI

The Holy Spirit is the third person of the Godhead

He will come again on the clouds of heaven, just as He appeared when He ascended into heaven. Meanwhile He has received from the Father the promised gift, and has shed it forth, even the Holy Spirit—the Third Name in the Godhead, and the Third Degree of the Divine Majesty; the Declarer of the One Monarchy of God…

Tertullian
Against Praxeas
Chapter XXX

The Father did not suffer

Then, again, the Father is as incapable of fellow-suffering as the Son even is of suffering under the conditions of His existence as God. Well, but how could the Son suffer, if the Father did not suffer with Him? My answer is, The Father is separate from the Son, though not from Him as God.

Tertullian
Against Praxeas
Chapter XXIX