Jesus is not of the seed of Coniah. Coniah who was cursed. However, Jesus is not from the seed of Joseph so He can sit on the throne of David through Joseph. By telling Joseph this, she could of been stoned to death. However, she knew the Holy Spirit had put the seed into her.
Virgin birth is a new thing in earth.
This new thing God created that of a man born of a virgin woman. This is how a woman, Mary, compassed a man by the achievement of a child without a man's seed. Especially, a sign in either the depth or height above. Jesus offen referred to Himself as son of man. Jesus is God with us .