“I continue to employ my usual severity while laboring to correct the prevailing vices, and especially those of the young. The right-thinking tell me of the dangers by which I am surrounded, but I take no heed of this, lest I should seem too careful for my personal safety. The Lord will provide such means of escape for me as He sees good.” — Calvin to Viret, 1547.
Calvin would never be invited to speak at a PCUSA church nowadays. Never.