"I am convinced, being fully persuaded in the Lord Jesus, that nothing is unclean in itself. But if anyone regards something as unclean, then for that person it is unclean" (Romans 14:14, NIV).
Plain and simple, not everyone is going to agree with how you see the Bible. Yes, there are many things that are clear cut and black an white. There are other areas where the Bible is a bit vague, and requires you to be dependent on the Holy Spirit to know what God is saying to you about a particular situation. If God has given you a peace and a freedom about something and it does not contradict His word, then hold on to it. If God has given you a "hold on, wait a minute" in an area, hold on to it. But in never use what God has shown you as an equivalent with His unchanging truth for other people.
Many relationships and connections are stressed and damaged because of arguing about what the Bible says, what it means, and how it should be applied. Don't ARGUE what the Bible says. KNOW it. LIVE it. Let others SEE it. TEACH it. Then let Holy Spirit CONFIRM it. Arguing about the truth of God will keep you focused on what what divides and destroys and not on living it out with honor and integrity. Jesus spoke it, lived it, and let others see it in Him. The best argument for the Word of God is letting others see the irrefutable evidence of change in YOUR LIFE.
Arguing is generally began as a discussion with a pure intention. You want to share with another of a differing view what you believe in why. Of course, you feel that if they would just listen to all of your well thought out points of reason, they would abandon what they had previously held onto and adapt to your logical manner of thinking. And when that doesn't happen, emotions begin to ramp up little by little until the argument is no longer about WHAT is right, but WHO is right. When you are no longer able to reason with someone, let it go, at least for the time. Arguing will not lead you closer to truth, only closer to a more divided atmosphere. It's not about truth, but about who's in control. Let God be in control and let Him heal you when you feel like you're losing control. Hold on to what is true, but be careful not to hold others to see or value all that you hold to the same regard. Aside from absolute truth, God may be dealing with them in different areas and in different ways. Let the arguement cool and let the nexus heal.