One Calvinist explains: “What is unbelievable is the assertion that those who reject the doctrines of grace can also claim to understand the gospel. They do not. How can they? That’s where the Synod of Dort stood and I think they got it right.”
Another Calvinist responds: “I was saved before I became a Calvinist. I would argue that I certainly and ‘savingly’ understood the gospel before I came to understand the doctrines of grace. I think that I understand it much better now, of course, but to assert that non-calvinists do not and cannot understand the gospel is wrong, prideful, and uncharitable.”
The original Calvinist replies: “If the doctrines of grace aren’t essential, why even bother to preach it?”
The Calvinist responds: “We are commanded to preach the whole counsel of God. Not just the most barest essentials of what man must believe in order to be saved.” (emphasis mine)
My conclusion is that the Calvinist’s reference to the “whole counsel of God” was meant to imply the aforementioned “doctrines of grace.” The problem is that the gospel is already, clearly spelled out in Scripture, though Calvinists wish to infer something much deeper, namely, fatalistic precepts of special secret election and non-election. The problem with that, is that why would the apostles lay out what they describe as “the gospel,” if there is something more, namely, something secret, with a wink and nod?
If Calvinism rejects an Unlimited Atonement, then it rejects the Gospel, and is in danger of a curse, according to Galatians 1:9.