Romans 12:18 – If possible, so far as it depends on you be at peace with all men.
This sounds like an impossibility in our world today, to be at peace with all men including non-believers and believers. Sometimes it seems harder to be at peace with other christians due to the various differences in beliefs and interpretations.

Thinking of all the different thoughts and ideas, different denominations, interpretations and beliefs and different religions how could it be possible to be at peace with everyone?
The dictionary says of peace: a state of mutual harmony between people or groups, especially in personal relations: cessation of or freedom from any strife or dissension.
I think this is what God is saying, that we are to live in harmony with our brothers and sisters in Christ, not allowing any oppressive thoughts or emotions to take control of our feelings towards others. In other words, we live in love. Just because someone does not interpret the Bible the same way we do, or go to the same church we do, or does not go to church at all we still have the common bond of being one in Christ. We are to accept one another in love and respect the fact that God works differently in each of us.

If we believers could just understand that God speaks to each of us in his own special way. We do not have to live the way others live or based on what others think. We do not have to force our beliefs on others or argue with people who see things differently. We are to allow our Father to work in our lives and follow Him on the path He has for us.
Our responsibility is to love God and love everyone we come in contact with, accept them for who they are and pray that the Holy Spirit will work in their lives. Living in this manner would accomplished much more in showing the love of Christ to all of those we meet