This fits the Incarnation. Christ saves human beings as body and soul. The Church therefore receives visible rites through which the invisible grace of Christ is truly given.
Christ gives grace through His Body
The Church is the Body of Christ. In the Mysteries, Christ acts in His Body through the Holy Spirit. The priest prays, the Church worships, the visible sign is used, and the grace of Christ is given according to the promise and order of the Mystery.
This is why Coptic sacramental life is concrete. Salvation is received in Baptismal water, the holy Myron, repentance and absolution, the Eucharistic gifts, anointing oil, the crowning of marriage, and the laying on of hands in ordination.
The Cross and Resurrection reach the faithful
The Mysteries apply the saving work of Christ to the faithful. Baptism joins the person to Christ’s death and Resurrection. Chrismation gives the Spirit. Confession gives forgiveness from the risen Lord. The Eucharist gives communion in Christ Himself.
Therefore we were buried with Him through baptism into death, that just as Christ was raised from the dead by the glory of the Father, even so we also should walk in newness of life.
The grace of the Cross is therefore lived, received, and renewed in the Church. The Mysteries are Christ’s saving work reaching His people in the present.
The whole person is sanctified
Because the Mysteries use visible signs, they teach that the body matters. Water touches the body. Oil anoints the body. Bread and wine are received. Hands are laid on. Crowns are placed. Words of repentance and absolution are spoken and heard.
Through these visible acts, Christ sanctifies the whole person. The faithful are born, sealed, restored, fed, healed, blessed, and shepherded in a life that is both spiritual and bodily.