Calvin here responds to the Romanists:23 "Here indeed they disclose their impiety not only more clearly but also more grossly. The device of opus operatum is recent [post-patristic], and was coined by illiterate monks who had never learned anything of the nature of sacraments….
"If we grant their postulate — that grace is procured in the sacraments opere operato — a part of merit is separated from faith, and the use of the sacraments is in itself effectual for salvation." However, "the apostle is a witness that they are of no avail, unless received by faith." See: Acts 8:12-23; First Corinthians 1:12-17; First Peter 3:20f ; compare Mark 16:16. Yet throughout, Dr. Calvin never