I am not a Biblical scholar, but I am not sure the Bible talks about marriage at all. I am not sure what the Greek word is for union, but the Latin word is unus, which means one. It wasn't until middle English that union came to mean marriage. What will be interesting is to find out what it actually says in Greek. But, as far as I know the Bible doesn't talk about marriage specifically at all.
Got $5000?
Then why comment on a subject on which you have no knowledge?
So what your saying is...you are not sure.