I'm very very sure that God is not post-modern, if my definition of post-modernism is the same as yours.
The Bible is like cement. It will stay as it is. If you're wondering about interpretations, well, Jesus Himself spoke as One who had authority. He knew what Scripture was about and He never entertained school of thoughts. I doubt we should entertain school of thoughts either. The scribes and teachers of laws probably entertained such schools of thoughts and Jesus spoke sternly to them.
My pastor told me once and I heartily agree with him. People want to find out about election and so on. But the whole world is dying and we argue to whether Jesus died for all or died for the elect. We can spent the time praying and if the Lord wants to give us a revelation of election that's biblical, then praise God for that. It doesn't matter whether it's limited atonement or whatever not. If you can prove to me that limited atonement is biblically true, then I will accept it. But personally I don't believe God sent His Son to die for only the elect.
Moral laws are set out strictly by God and it is to be strictly adhered to.
Some things like drinking may be an issue to people. Jesus Himself drank wine when He attended a wedding. Paul told Timothy to drink wine because a little wine is good for the stomach. However, people may struggle with drunkenness hence it's best that we don't drink it in front of people who struggle with drunkenness lest they see it as a license to indulge in the sin they are fighting with. There are many issues to consider, eg. the place you drink etc, who you're drinking etc. But if I know that I'm better off not drinking because I know I might cause a brother to sin or it might cause me to fall, I might as well totally abstain from it.
Things like schooling.. ah I don't think the Lord Himself is very concerned whether your kids are home-schooled or not. I went to a public school myself and so do many Christians in my church. But if it's the Lord's will for your kids to be home-schooled, then it'll be wise to obey it.
Things like going to war and so on. Some people believe that a man has to go to war if he needs to. Not because he delights in the killing but because he loves his country and his family and yearns to protect it with his life. I think I'll take this side of view.
It's for certain that all men, apart from God, are bad. Sin is a horrible thing. Men are only made good by the blood of Jesus. Bible says that "No one is upright." If I'm not upright,then it will mean I'm a sinner and there's not a ounce of good in me.
As for prosperity gospel preachers, well, maybe I might adopt the approach of abstaining from their books and sermons. But if they are truly saved, then they are our brothers and sisters in Christ.
And lastly, I don't think God will allow His children to hold opposing viewpoints in reference to Scripture.
I hope I can be corrected if I made a mistake!