First, I want to state, I don't agree with polygamy (or even gay marriages).
My friend Difster opened up a discussion on this subject on his site (see sidebar) and the comments are here.
One guy commented You people do realize that if you are wrong, you will go to hell for adultery as Christ will abandon you for the sin of unrepentant adultery on the Day of Judgement, right?
It made me think that we all need to be careful about the judgment thing. (Read my comment under Dif's post) I agree that Phillipians 4:8 is a better road to take, but we need to reason through things with God. Some people are just at different points in their life and need to reason in a different way. Telling them they are going to hell, just shuts them off to whatever point you might be making.
Think about the woman at the well. Did Jesus lambast her, "You slut! You've had 5 husbands and the guy you are with now isn't even that. What a whore! Go away!"
Not what he did at all. Although God is just, LOVE is the key. Understanding is not allowed under justice. With justice, there is no mercy. That's why God tells us HE alone is judge. Why HE alone will exact vengeance.
Our problem isn't because we don't understand justice.
Our problem is that we don't understand love.