Paul warned us about those introducing false teachings, "For the time will come when men will not put up with sound doctrine. Instead, to suit their own desires, they will gather around them a great number of teachers to say what their itching ears want to hear. They will turn their ears away from the truth and turn aside to myths." (2 Tim. 4:3–4).
“I appeal to you, brothers, in the name of our Lord Jesus Christ, that all of you agree with one another so that there may be no divisions among you and that you may be perfectly united in mind and thought. My brothers, some from Chloe's household have informed me that there are quarrels among you. What I mean is this: One of you says, "I follow Paul"; another, "I follow Apollos"; another, "I follow Cephas"; still another, "I follow Christ." 1Cor 1:10-12
You could easily read the above as “One of you says, "I follow Luther"; another, "I follow Calvin"; another, "I follow Wesley"; still another, "I follow Christ."
Christians cannot be “perfectly united in mind and thought” when they have different beliefs on, say, the necessity of water baptism, while others believe “This is my Body” means “This is a cookie”
Well-put! FR seriously needs a “like” button! :)