The following is a summary of my most recent class in pursuit of my master’s in theology at Colorado Christian University regarding the Divine/Human Aspect of Jesus Christ.
By Steven Barto, B.S., Psy.
I found information under the heading Biblical Perspective—Jesus Christ: Both God and Man to be a great springboard for this discussion. Indeed, one of the great mysteries in Christianity involves discerning how the two natures of Jesus (divine and human) relate to each. In fact, Paul tells us in Philippians 2:6-7, “[W]ho, though he was in the form of God, did not count equality with God a thing to be grasped, but emptied himself, taking the form of a servant, being born in the likeness of men” (RSV). Reading further, we also see that Jesus (while in human form) humbled Himself and became obedient to the will of the Father even unto death on the cross. To me, it seems counter to Christian doctrine to argue, as Arianism does, that Jesus was begotten by God the Father at a point in time as a being distinct from the Father and, consequently, subservient to the Father. Further, Arianism states that Jesus was the first creation of God. Interestingly, the heresy of Jehovah’s Witnesses would support this belief. In fact, it is for this very reason Jehovah’s Witnesses do not celebrate the birth of Christ. JWs are essentially rationalists who reject the Doctrine of the Trinity and, accordingly, much of the teachings and miracles of Jesus Christ.
Arianism bases its belief, at least to some degree, on Colossians 1:15: “He is the image of the invisible God, the first-born of all creation.” Accordingly, I will begin with this biblical verse. Quoting from a transliteration of the Greek, Colossians 1:15-16 says, “In whom we have the redemption, the forgiveness of (our) sins; who is an image of the God—invisible, firstborn of all creation, because in him were created all things in the heavens and on the earth, the visible and the invisible, whether thrones or lordships or rulers or authorities; all things through him and for him have been created; and he is before all things and all things in him consisted.”  My interpretation of this passage is that Jesus is considered the “firstborn” because of His divine actions regarding creation itself. It refers to Jesus as the cause of creation. It does not refer to the creation of Jesus. Matthew Henry provides a helpful interpretation. Regarding Jesus, Henry states, “He was born or begotten before all the creation, before any creature was made; which is the Scripture way of representing eternity, and by the eternity of God is represented to us” [emphasis mine].  Henry continues by explaining that all fulness dwells in Jesus; a fulness of merit and righteousness, of strength and grace for us. This seems to fly in the face of Arianism’s claim that God created the Son at some point in time.
To help support my opposition to Arianism, please consider the commentary of Finis J. Dake. The Greek word prototokos, translated “firstborn” and “first begotten” is used of Jesus to mean the firstborn child of Mary (Mt. 1:25).  To me, this refers to the firstborn in God’s family as it relates to God born into humanity and not to deity. Acts 13:23 says, “From this man’s descendants God has brought to Israel the Savior Jesus, as he promised” (NIV). Acts 13:33 says, “He has fulfilled for us, their children, by raising up Jesus. As it is written in the second Psalm: ‘You are my son; today I have become your father.” It would appear this refers to God sending Jesus to earth (as God incarnate) which set in motion the plan through which all of mankind can become adopted sons and daughters. The Nicene Creed would seem to muddy the waters regarding this critical doctrinal question with the wording: “And in one Lord Jesus Christ, the Son of God; begotten from the Father; only-begotten—that is, from the substance of the Father; God from God.” However, the Creed specifically states, “Begotten not made; being of one substance with the Father.”  In fact, homoousion to patri refers to the Father and the Son being “of similar substance” or “of like being,” and does not indicate that God the Father created God the Son.
D. J. Treier, in his treatise “Jesus Christ,” notes the biblical history of Jesus’s earthly ministry and inauguration of a “new humanity.” This is the very essence of the “good news.” Concerning whether Jesus was “begotten” of the Father, it is important to note that Jesus has always been, and He was with God and “was God” at the creation. Perhaps it is best to consider the remark “today I have begotten thee” to be the beginning of the Christology of Christ; the start of His earthly mission. Treier notes, “The Bible’s Christological foundation begins with the ‘incarnational narrative.’” 
We must also remember that Jesus said He existed before Abraham (John 8:58). Also, He claimed that He and His Father are one (John 10:30), that He is equal with the Father (John 5:17-18), and that He, the Father, and the Holy Spirit were present (together as separate beings) at the moment of creation (Genesis 1; John 1:1-3). And we must not forget that Jesus (the man) was born in the flesh through Mary as conceived by the Father. This is the only manner in which we can rightly state that Jesus was born of the Father; however, it is the incarnate (physical) birth of Jesus we’re speaking of in this instance and not His creation as God the Son. Moreover, God has always existed as a three-in-one being, consisting of Father, Son and Holy Spirit. Consider the word “trinity” (tri-unity or three-in-oneness): meaning three and unity. I heard it expressed this way a few years ago: not one-plus-one-plus-one equals three, but one-times-one-times-one equals one.
1. Alfred Marshall, The Interlinear NIV Parallel New Testament in Greek and English (Grand Rapids: Zondervan, 1976), 791
2. Matthew Henry, Matthew Henry’s Concise Commentary on the Whole Bible (Nashville: Thomas Nelson, 1997), 1164.
3. Finis J. Dake, The Dake Annotated Reference Bible (Lawrenceville: Dake Publishing, 2008), 389.
4. Alister McGrath, The Christian Theology Reader, 5th ed. (Chichester, West Sussex: Wiley Blackwell, 2017), 11.
5. D.J. Treier, “Jesus Christ,” in Evangelical Dictionary of Theology (Grand Rapids: Baker Academic, 2017), 442.
 K.M. Kapic, “Atonement,” in the Evangelical Dictionary of Theology (Grand Rapids, MI: Baker Academic, 1994), 97.
 Ibid, 97.
 Wayne Grudem, Systematic Theology (Grand Rapids, MI: Zondervan, 1994), 568.
 R.E.O. White, “Salvation,” in the Evangelical Dictionary of Theology (Grand Rapids, MI: Baker Academic, 1994), 769.