So whose law is this 1st amendment right you speak of belong to? Reference Matthew 6:24. The same principle applies, when it comes to church. Christianity has many doctrines and builds upon different foundations. The context: “The Lamp of the Body” also Galatians 1:10
So the reference you made of Isaiah 2:4 Context: The Mountain of the lord is admirable if applied to one’s heart truthfully.
Once again, church and state are separate. If you wish to speak of international law, the U.N. then look at International Covenant on Civil and Political Rights
Adopted and opened for signature, ratification and accession by General Assembly resolution 2200A (XXI) of 16 December 1966 entry into force 23 March 1976, in accordance with Article 49
Attention to Article: PART II Article 2
Which all in this forum are guilty of and even the owner of this website. So how would proceed to sue, since this would also include religions such as the Mormons, Amish, and yes even the Catholics that excommunicate their unrepentant members, and break all ties or dealings with that person. Example, the butler that opened the Vatican scandal under Pope Francis, this person is not even allowed back into Vatican City.