I think it’s the same as perjury.
The decision of the jury = orthodox, sect, denomination, prerogative, opinion.
What we need is the two witnesses of God, the law of God , as in all things written in the law and two, the prophets. Remember orthodoxy crucified the Son of man, Jesus.
How would that affect one called a Calvinist with one of another denomination as far as marrying each other, other than searching the scriptures as needed to seek His approval ? I would say how can we hear, not so much what do we believe but who. Of God or of men?
Peter experienced that in Mathew 16. He was forgiven of his blasphemy. Today that is not possible