The reason why Lord Jesus was the only one that can do what he did for us on the cross is because he was born of the Holy Spirit and not man. And the reason why God chose Mary because she was a virgin that never been with the man. The Holy Spirit of God is what cut the ties to the sinful man that was brought upon us through Adam and that's what made the perfect sacrifice in order for us to be redeemed through a savior and that's Lord Jesus. See, Lord Jesus was born with the Holy Spirit of God and it's because of his birth that all of mankind can be saved and set free from the sin that's attached to flesh. See, we're born sinners because of Adam and that's why we must be born again through Lord Jesus. So that we may receive the Holy Spirit of God, a prayer to his flesh in Jesus name. Amen.