Read Transforming Our Culture, by DR Tony Evans, at One Place, for a wonderful study on how to treat fellow saints...
"What is the role of Christians in our society? ...Society is transformed when God's people execute His strategy in history in a Christ-centered way."
Thus says the LORD of hosts, the God of Israel, to all the exiles whom I have sent into exile from Jerusalem to Babylon, 'Build houses and live in them; and plant gardens and eat their produce. 'Take wives and become the fathers of sons and daughters, and take wives for your sons and give your daughters to husbands, that they may bear sons and daughters; and multiply there and do not decrease.
'Seek the welfare of the city where I have sent you into exile, and pray to the LORD on its behalf; for in its welfare you will have welfare.' "For thus says the LORD of hosts, the God of Israel, 'Do not let your prophets who are in your midst and your diviners deceive you, and do not listen to the dreams which they dream. 'For they prophesy falsely to you in My name; I have not sent them,' declares the LORD. "For thus says the LORD, 'When seventy years have been completed for Babylon, I will visit you and fulfill My good word to you, to bring you back to this place. 'For I know the plans that I have for you,' declares the LORD, 'plans for welfare and not for calamity to give you a future and a hope.
Let love be without hypocrisy. Abhor what is evil; cling to what is good. Be devoted to one another in brotherly love; give preference to one another in honor; not lagging behind in diligence, fervent in spirit, serving the Lord; rejoicing in hope, persevering in tribulation, devoted to prayer, contributing to the needs of the saints, practicing hospitality. Bless those who persecute you; bless and do not curse. Rejoice with those who rejoice, and weep with those who weep. Be of the same mind toward one another; do not be haughty in mind, but associate with the lowly. Do not be wise in your own estimation.