230. For what reason are the sacraments necessary for salvation?

For believers in Christ the sacraments, even if they are not all given to each of the faithful, are necessary for salvation because they confer sacramental grace, forgiveness of sins, adoption as children of God, conformation to Christ the Lord and membership in the Church. The Holy Spirit heals and transforms those who receive the sacraments.

Further reading: CCC 1129

231. What is sacramental grace?

Sacramental grace is the grace of the Holy Spirit which is given by Christ and is proper to each sacrament. This grace helps the faithful in their journey toward holiness and so assists the Church as well to grow in charity and in her witness to the world.

Further reading: CCC 1129, 1131, 1134, 2003

232. What is the relationship between the sacraments and everlasting life?

In the sacraments the Church already receives a foretaste of eternal life, while "awaiting in blessed hope, the appearing in glory of our great God and savior Christ Jesus" (Titus 2:13).

Further reading: CCC 1130