The answer is: God

Mark 1:1 - Throughout the gospels Jesus is called the Son of God and had no genetic connection to Joseph. Jesus was born from God's power, the Holy Spirit, acting upon Mary and for this reason his father was God and his mother was Mary. He was therefore called both the Son of God and also the Son of Man.

When it comes to the nativity, there’s a rich tapestry of meanings surrounding the fatherhood of Jesus. Identified as the “Son of God,” Jesus signifies a profound connection to the divine, facilitating the embodying of God's spirit in human form—a concept that resonates strongly in various philosophical and theological outlooks. The virgin birth emphasized that Jesus had aunique origin, highlighting the miraculous nature of his existence.

Interestingly, the title “Son of Man” appears throughout the Gospels, often attributed to Jesus himself, painting him as a figure deeply connected to human experiences and struggles. With this dual identity, he bridges the divine and the earthly, resonating with people from all walks of life. This duality is not just a theological concept; it's representative of our humanity connected to a greater universal plan.

Speaking of plans, let’s take a moment to appreciate the cultural backdrop. The terms "Son of God" and "Son of Man" were not exclusive to Jesus; they appeared in the Old Testament as well. Notably, the phrase “Son of Man” is rooted in the apocalyptic imagery of the book of Daniel, revealing an impressive cyclic view of divinity and human existence woven into biblical narrative.

Ultimately, appreciating Jesus’s profound lineage enriches our understanding, together crafting a story both mystical and innately relatable—a wholesome rendering of a life with purpose that reverberates through time, encouraging each principal seeker to explore their personal understanding of origins, heritage, and meaning.