The first man is of the earth, earthy: the second man is the Lord from heaven. – 1 Corinthians 15:47

Beloved, the human nature of Christ was taken on Him in order that He might be able to do for us that which God desired and required. God desired to see an obedient man, a man who would keep His law to the full; and He sees him in Christ. God desired to see one who would vindicate the eternal justice, and show that sin is no trifle; and behold our Lord, the eternal Son of God, entering into that prepared body, was ready to do all this mighty work, by rendering to the law a full recompense for our dishonor of it! An absolutely perfect righteousness He renders unto God: as the second Adam, He presents it for all whom He represents. He bows His head a victim beneath Jehovah’s sword, that the truth, and justice, and honor of God might suffer no detriment. His body was prepared to this end. Incarnation is a means to atonement. Only a man could vindicate the law, and therefore the Son of God became a man. This is a wonderful being, this God in our nature. “Emmanuel” is a glorious word. Surely for the incarnation and the atonement the world was made from the first. Was this the reason why the morning stars sang together when they saw the cornerstone of the world, because they had an inkling that here God would be manifest as nowhere else beside, and the Creator would be wedded to the creature? That God might be manifested in the Christ, it may even be that sin was permitted. Assuredly, there could have been no sacrifice on Calvary if there had not first of all been sin in Eden. The whole scheme, the whole of God’s decrees and acts, worked up to an atoning Savior. Of the pyramid of creation and of providence Christ is the apex: He is the flower of all that God hath made. His diving nature in strange union with humanity constitutes a peerless personage, such as never was before, and can never be again. God in our nature one Being, and yet wearing two natures, is altogether unique. He saith, “A body hast Thou prepared Me. Lo, I come.” Think of this: it is a truth fitter for meditation than for sermonizing. The Lord give us to know it well by faith! ~ C.H. Spurgeon

https://www.blueletterbible.org/Comm/spurgeon_charles/sermons/2202.cfm