Some Christians, especially the Charismatics, would say: Be nicer to fellow Christians while damning the non-Christians especially those who refuse Gospel or those who are not "with us".
There are many other Christians, especially the Evangelical Christians, on the other hand, would say: Be very nice to non-Christians, but if you find fellow Christians at fault, rebuke them or if rebuke is too harsh, "apologize" later, or rebuke in a less serious manner, but only to fellow Christians.
Both of the above, are extremists in principle. Not able to discern time and people. Being quick to judge while telling others not to judge at the same time.
There is a third category, whether he claims to be Christian or not, those who say: Respect everyone. Respect everyone's opinion. Respect the homosexuals, their opinion, respect the feminists, respect the pornographic authors, artists. If you are Christian, you can preach the Gospel already by your own action.
True, one must watch his own action so that he would not put the name of our Lord in shame. However, if one thinks by merely following the law, being nice to everyone, avoiding conflicts, escaping from controversies, one will never be at fault, he needs to seriously consider Matthew 25 and Luke 19 regarding the servants who did not spend the money given them wisely.
By action....words are easier to be said than done. By action, one assumes there's no need to confront with the ignorant of mankind towards God's word, there's no need to struggle against our human fallen nature which is being an enemy of God. Therefore, it is obvious now why you see some Christians would convert to other religions. Because other religions can also achieve an exemplar righteousness to a certain degree enough to be admired by others even some "Christians". Such, is a theological failure.
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