This is a guest post by Stephen J. Wellum, author of God the Son Incarnate: The Doctrine of Christ.
1. The person or active subject of the incarnation is the eternal Son.
John 1:14 is clear: “The Word became flesh.” In other words, it was the Son from eternity who became incarnate, not the divine nature. The Son, who is in eternal relation to the Father and Spirit, willingly humbled himself and chose to assume a human nature in obedience to his Father and for our salvation (Phil. 2:6-8).
2. As the eternal Son, the second person of the triune Godhead, he is the full image and expression of the Father and is thus fully God.
Along with the Father and Spirit, the Son fully and equally shares the divine nature. As the image and exact correspondence of the Father (Col. 1:15; Heb. 1:3), the Son is fully…
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