We concur that the scripture is obvious on wedding (though you can find circumstances when you look at the Old Testament like King David, that may be confusing for a brand new Christian).
The only requirement of salvation is John 3:16. We state this with love you do not know how long they may have been in the faith– you do not know this person. Our company is on our very own journey with Jesus and just He understands our hearts. I’m not saying we can’t be stern however it should be completed with love