“Unless you can enter deeply into the mystery of the Incarnation, I’m afraid your Christianity will remain shallow, uninspiring and largely legalistic. You will essentially think that Christianity is about rules and rewards and where you go when you die. And in an increasingly secularized and pluralistic culture not too many people are interested in a legalistic afterlife religion. The best hope I know for presenting the gospel in a compelling way to a 21st century audience is to begin with….the beginning: The Incarnation. The breath-taking mystery of God joining us in our humanity.” [1]

Greg Boyd, has put it this way, “There is no denying that the Incarnation is paradoxical. It is hard, if not impossible, to conceive how a person could be, at one and the same time fully God and fully human. I don’t think this should surprise us too much, however. After all, we confront similar paradoxes in science as well as in our everyday life. For example, as I’m sure most of you have heard that physicists tell us that light has the property of waves in some circumstances and of particles in other circumstances, yet we have no way of understanding how this is possible. Even the nature of time and space is paradoxical if you think about it. We can’t conceive of time having a beginning, but neither can we conceive of it without a beginning. So too, we can’t conceive of space having an end, but we also can’t conceive of it not having an end. If things as basic to our experience as the nature of light, time and space are paradoxical, I don’t think we should find it too surprising that things surrounding God are mysterious.”
Paul declared that Jesus was nothing less than the very embodiment of all of God. This distinction of “all of God” is important for us to understand what it means for us to see Jesus and God rightly. Battling proto-gnostic teachers who were apparently presenting Christ alongside other manifestations of God, Paul declares “in Christ all the fullness of the Deity lives in bodily form” (Col. 2:9; cf. 1:19). His statement could hardly have been more emphatic:
“All” (pan)—not some
“of the fullness” (plērōma)—not a part or an aspect
“of the Deity” (theotēs)—not a lesser divine being. [2]
As F.F. Bruce notes (regarding 1:19), Paul is asserting that, “all the attributes and activities of God—his spirit, word, wisdom and glory—are disclosed in [Christ].”[3]
In other words, the fullness of God is revealed or embodied in Jesus. Jesus is the complete revelation of God in Word. Graeme Goldsworthy puts it this way, if “Jesus is the one mediator between God and man,” then Jesus himself must be “the hermeneutic principle for every word from God.”[4] It is also paramount to recognize that Christ is the “head” of the cosmos by which all reconciliation will come (Eph. 1:10; Col 1:19-20).
The Temple and YHWH’s return to Zion are the keys to gospel Christology. Focus on a young Jewish prophet telling a story about YHWH returning to Zion as judge and redeemer and then embodying it by riding into the city in tears, by symbolizing the Temple’s destruction, and by celebrating the final Exodus. He would be the pillar of cloud for the people of the new Exodus. He would embody in himself the returning and redeeming action of the covenant God. [5] Wright is suggesting, and I would agree that we are to read the Gospels as the Story of God’s returning to Israel, to Zion, to the Temple and Jesus is that presence of God.
Regardless of your view of the atonement, such as Substitution, Satisfaction or Christus Victor; in all of them, Christ must be human in order for the sacrifice of the cross to be efficacious, for human sins to be “removed”, “cleansed”, “purified”, “covered”, and/or “conquered” (again depending on your atonement theology). This soteriological emphasis then gives way to the incarnation of the Son of God becoming a man so that he could save us from our sins. Therefore, the incarnation serves as a fulfilment of the love of God manifested and revealed in completeness as Jesus to be present and living amidst humanity, to “walk in the garden” with us.
The pervasive New Testament theme of union with Christ is by the Spirit. We actually become united to Christ the Lord by the Spirit’s power.
Michael F. Bird shares this, “What we should take away is that in the unfolding story of the New Testament, the pre-incarnate Son who divested himself of divine glory in his incarnation is now fully invested by the Father with divine authority over every realm and every creature. What the Lord God of Israel does in creation and redemption is now, in some way, done through the lordship of Jesus Christ. When Jesus is named as “Lord” it is usually in the context of affirming that he carries the mantle of the Father’s authority and that he is the Father’s agent for rescuing Israel and putting the world to rights. Confession of Jesus as Lord was not a matter of mere assent or academic affirmation. It was a life and death issue. It meant standing up to the Caesar’s of the world who usurped for themselves the praise and power that rightly belonged to God. As Christians today, our highest vocation is to live our lives under the aegis of Jesus’ lordship and to make it clear to all that “this Jesus,” whom men and women reject, is Lord of all. What is more, the Lord Jesus will bring justice to our sin cursed earth and then flood the world with the shalom of heaven.” [6]
Before Christ passes, he shares with the remnant, his faithful disciples that he wants them to continue this oath of allegiance to a coming kingdom and that he will rule as the Lord of all regathering the nations to Him. And when he dies, no one can understand what has happened. We still struggle with this today. We don’t know the full work of the cross; we don’t need to. We know that it was the power to save. The veil separating humankind from God was torn and the cord fell once and for all. The blood of the cross would run both ways. The plan to enter into a holy covenant with God would be not only restored but made perfect. The new covenant was cut. The plan of redemption for all humankind fulfilled. Nothing more than obedient faith to walk with God would be asked for. This commitment would encompass all of life, the heart, mind, and soul. [7]

[1] brianzahnd.com/2008/12/son-of-adam/
[2] The Incarnation: Paradox & reknew.org/2017/01/jesus-center-scripture/
[3] F. F. Bruce, The Epistles to the Colossians, Philemon and to the Ephesians, NICNT (Grand Rapids: Eermans, 1984), 207.
[4] Gospel-Centered Hermeneutics, 252, cf. 62.
[5] N.T. Wright, The Historical Jesus and Christian Theology, Sewanee Theological Review 39, 1996.
[6] Reflections on Jesus as Lord, June 24, 2014 by Michael F. Bird
[7] Dr. Will Ryan, This is the Way of Covenant Discipleship, Crosslink Publishing 2021 Pgs. 82-83