Jesus is not the Son of God in an earthly way. God did not marry so he could have a son. God did not have relations with Mary resulting in a son. Jesus is the Son of God, that is, God showed Himself to us in a human body. In this sense, Jesus is the Son of God, created in the womb of Mary by the Holy Spirit.
During his trial before the Jewish leaders, the high priest said to Jesus, “I demand in the name of the living God—tell us if you are the Messiah, the Son of God.” Jesus replied, “You have said it. And in the future you will see the Son of Man seated in the place of power at God’s right hand and coming on the clouds of heaven.”