John Calvin

 I am not a fan of John Calvin, but not because I dislike him; don't know too much about his personality, to be honest. Abusive, insulting, harsh? I am pretty sure some people could have said this about Paul the Apostle as well. He sounds pretty defensive in 2 Cor 10-13. Be that as it may, it does not automatically make Calvin heretic. Ad hominem fallacy alert?