Though not always appreciative of what Charles on the Calvinist Flyswatter has to say, I find this statement (actually by Bob Ross, I think) pretty on target: "Furthermore, some modern Calvinists appear to be so 'straight and narrow' about having a proper theoretical or systematic theology that they can't seem to appreciate the simple truth wherever it is found. For example -- Andrew Fuller tells about being criticized by an 18th century strong-as-a-bear's-breath Calvinist for quoting John 3:16, as if it was 'Arminian' to do so. Fuller replied that a Scripture was nonetheless true just because it was used by an Arminian. A lot of these types were actually converted under less-than-Calvinist preachers, even under Arminians, but now they seem rather reluctant to admit it. They can't seem to appreciate the simple Gospel when it happens to be preached by an 'Arminian'."
"I declare unto you the gospel...how that Christ died for our sins according to the scriptures; And that he was buried, and that he rose again the third day according to the scriptures:"