The word of God is very clear, right from the mouth of Jesus:
[color=990033]Mat 5:31 ¶ It hath been said, Whosoever shall put away his wife, let him give her a writing of divorcement: [/color]
[color=990033]Mat 5:32 But I say unto you, That whosoever shall put away his wife, saving for the cause of fornication, causeth her to commit adultery: and whosoever shall marry her that is divorced committeth adultery. [/color]
If people really understood that He meant what He said they would enter into marriage more carefully and they wouldn't get out of them either.
I have seen many Christians who hold onto the thought that they have an option to divorce their spouse. In the back of their minds they aren't really committed but mor akin to the worlds view. They come up with loop holes. I'll just never remarry. I have heard that one several times. They figure they can get away with divorce by saying that. This is the result of having a difficult to deal with spouse or an unsaved one. However Jesus said only for adultry, not just because you are sick of them. I have had to confront this issue a number of times and stand my ground even though it caused a rift between me and a close friend.
I have had to deal with this scripture in my own life because I have gone through seasons where my own marriage was more than I thought I could endure. However, every time I have remembered my committment and covenant, not with my spouse (as important as that is), but with God. God told me divorce is not an option for a Christian and My grace is sufficient for you.
The word isn't to be taken lightly. Marriage isn't to be taken lightly. The word says not to divorce, and even if the spouse is unfaithful you are to divorce them only if your can't forgive them. I know of a number of marriages that were restored after infidelity. This is certainly no open door to be unfaithful however.
I do think that in the case where someone was divorced and remarried before salvation that is a different thing because the old man is dead and all things have become new. A murder is forgiven, a theaf and a divorcee.
[color=000099]2Cr 5:17 Therefore if any man [be] in Christ, [he is] a new creature: old things are passed away; behold, all things are become new.[/color]
It seems to me it would be crazy to divorce your spouse because it was a second marriage after you got saved. What if you had children? Should you desert them as unclean seed? I believe these verses are binding on believers. Jesus was telling what believers are supposed to walk in.
If we make a covenant with our spouse in the sight of God, or get saved after we had already been married we are supposed to stay married to them until Jesus comes or we die, unless they decided to committ adultary. Then we can divorce if we can't forget and forgive.
My personal belief on this is that if possible it would be better to forgive and reconile if it is in your heart to do it. But that's just what I think. Love covers a multitude of sins.
I can't place a verse on this but if a spouse is physically abusive I think the endangered individual should leave them for safety sake, but not remarry. I would probably say not even file for divorce, but remain separate unless something changes and they are out of danger. Paul said some things he spoke were his opinion and this is my opinion on this paragraph, I'm not making a doctrine of it.