A two headed anything is a monster
I believe all truths are connected, and there's no unimportant truth in the Bible. For instance, it seems that it's just a theology talk about the Trinity. But I think the denial of the Trinity will lead to lots of harm to your salvation.
So what is the harm if we deny the correct understanding of the biblical marriage?
Good one Jim!A better way to think of this may be, WHAT HAS BEEN THE HARM BY NOT UNDERSTANDING BIBLICAL MARRIAGE?