There are Christians who realize that the life they lead and the values they exemplify should speak clearly to their beliefs and Christianity, and that nothing they could speak would be as telling as their behavior. They realize that they are born sinners saved by Grace and can never hold themselves higher or better than the most obvious sinners extant.
Many such Christians know the Scriptures - sometimes well - but do not quote such in arguments or discussions with non-Christians, nor do they try to tell non-Christians what they should do with regard to personal beliefs. There are many ways to witness and testify to one's Christianity.
One key is the realization that their faith is enabling in many ways and that non-Christians do not have the benefits of such faith and actually cannot understand or accept the fact of such faith. That void seems very significant.
In the same vein, such Christians understand the importance of defending their faith. They will do so, in part, by recognizing the belittling attacks, untruths, blasphemy, unethical behavior, etc., etc. as presented by those outside the Faith. False statements and devious tactics are to be exposed.
Those who attack and decry Christianity and Christians here are not bothersome or upsetting, for good reason. However, the darkness is a concern. Responding to that is not a game or pastime - it is not showtime to be taken lightly. A small candle may amount to very little in such vast darkness, and sometimes the best one can do is to try to open the door and shed light.
God, through His Son, brings about any conversion - it is not caused or gained by man.
