The sacraments are visible holy signs and seals appointed by God for this end, that by their use He may the more fully declare and seal to us the promise of the Gospel, namely, that of free grace He grants us the forgiveness of sins and everlasting life for the sake of the one sacrifice of Christ accomplished on the cross.[1]
67. Are both the Word and the sacraments designed to direct our faith to the sacrifice of Christ on the cross as the only ground of our salvation?
Yes, truly, for the Holy Ghost teaches in the Gospel and assures us by the holy sacraments, that our whole salvation stands in the one sacrifice of Christ made for us on the cross.[1]