Why are sacraments central to Roman Catholic belief and practice?

In Roman Catholicism, the seven sacraments are central to belief and practice because they serve as essential, mystical channels of divine grace that perpetuate the union between God and humankind.12

They are defined as outward signs instituted by Jesus Christ that are productive of inner grace. Often described as the "visible form of an invisible grace," these rites allow believers to encounter the mystery of God’s saving act. The effectiveness of these sacraments is understood as ex opere operato ("from the work done"), meaning their power is derived from the saving act of God in Christ rather than the personal virtue of the minister.31

The sacraments are categorized as follows:
* Initiation: Baptism, Confirmation, and the Eucharist.
* Healing: Reconciliation and Anointing of the Sick.
* Service: Marriage and Holy Orders.132

Through these rites, the Church provides a structured way for individuals to receive sanctification, seek forgiveness, and deepen their lifelong commitment to faith.2