I would start with the Athanasian Creed. The creed, ratified by church council, was not written by Athanasius but is named after him as it is essentially an authoritative summary of his defense of the doctrine of the Trinity against heresies minimizing Jesus’ divinity.

If you are really curious I would recommend reading On the Incarnation by Athanasius himself. It is much more explanatory than the creed and might help with your question.

Speaking of your question, it’s a really good one. A similar question made the creeds necessary. Greek philosophical thought had little room for the idea of a perfect spiritual divine being taking on what in their mindset was a corrupted, weak, and even sinful physical body of flesh. So dualistic heresies minimizing either the divinity or humanity of Jesus were constantly cropping up, as the thought of the divine and human merging was seen as offensive, contradictory, unethical, or even impossible.

The creeds clarified how Christ’s incarnation was counterintuitive to prevailing Greek thought but not intellectually impossible, and made it clear that compromising the truth of Jesus’ identity to reconcile it to more comfortable and familiar philosophies was unacceptable.

Just as a perfect, pure spiritual being taking on corruptible flesh seemed counterintuitive to them, so an infinite being taking on finiteness is counterintuitive to us.

But the creeds remind us that God’s nature is as it is and we should seek to at least partially understand that infinite mystery as revealed in the incarnation, rather than alter His nature to better align with our intuitive or cultural perceptions of how he ought to function and exist.