I believe the vast majority of Calvinists seek to be clear about their belief in Calvinism when interviewed by a pastoral search committee. I personally know some Calvinists who seek to make this very clear in the interview process. However, and quite unfortunately, that is not always the case.
Individual Human Responsibility. A major weakness in the Calvinist scheme is found here. It is a basic teaching of scripture that individuals are held accountable for their sin. This is the basis for judgment in both human law courts and the divine court.
It is a false argument posed by the Calvinists that requires the lost sinner to have spiritual understanding before they can be saved. The only thing the Bible requires is recognition of the lost condition which the Holy Spirit provides in conviction (John 16:8).
Calvinism is a diverse and complex theological system. When one attempts a study of the system, it doesn’t take long to discover that there are many side roads and many twists and turns in the path to understanding. The problem is complicated by those who hold to the system because there is no single view that all Calvinists accept.
The Calvinists will tend to emphasize the role of “God” in loving the world and giving the Son. The Arminians will tend to stress the word “whosoever” as indicating human freedom and the human decision-making process in salvation.