[Dr. Eckleburg]

No one has to read or believe Calvin’s Institutes. Scripture is all sufficient.

Unlike Roman Catholics who are told their very salvation depends on their church’s catechism.

[Petronski]

No one has to read or believe Calvin’s Institutes.

Sure.

Unlike Catholics who are told their very salvation depends on the Catechism of the Catholic Church.

Orthodox Presbyterian Calvinists are told that if they have come to believe the ICR, they are already saved by predestination, no matter what they do or don't do.

But that is not God that Calvin is describing, but rather Calvin's little pocket deity.