Who was the father of Jesus? (Hint: Don't answer impulsively. Think about your answer).
Who 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.