It happens in the Twin Cities every Thanksgiving where you get all kinds of different people together, no matter what they believe, and worship together. Post-modernist thinking people say that it means that there is no longer any truth. What is true is what works for me. It sounds like you're really convinced. But whether they believe it or not is irrelevant.
Faithful disciples are intolerant of false doctrine.
They will not entertain new and innovative theological ideas which contradict the clear Word of God. In the Greek - remain right where you are, stay there. If you stay in My Word. Our Lord Jesus does not want theological entrepreneurs in His church, coming up with new and clever ideas to win over new people each week. He wants faithful disciples, ministers, stewards of the Word.