The sacraments correspond with human nature in many ways. First, the sacraments physical effects ensure that their signs can be spread across humanity and give us the grace necessary to live a life in Christ. The sacraments in a sense ‘perfect’ our human nature because they give us the graces necessary to try to avoid sin and also become Christlike figures. This is significant because our Christian mission is to adopt these principles and Love our Neighbor.
Specifically, the sacrament of penance allows us to enter into an ever-present life of closeness to God. As humans, we are all subject to the temptation of sin and through the sacrament of penance our relationship with God is restored. In this case, our human nature plays a big role in the life of the Sacraments- we are all tempted to sin because of this nature and through the Sacrament of penance this nature can be ‘perfected’ so we can be Christ-like figures.
The Sacrament of Eucharist also allows us to perfect our human nature. The Sacrament of the Eucharist is the receiving of the body and blood of Jesus Christ, thus when we partake in this Sacrament we are elevating our human nature to another level- a transcendental level- and we receive the body and blood of our Savior.
-atohme