You have friends. They don’t profess Christ as their savior. Do you take them aside, present the gospel in stark terms, and drop them if they don’t repent? That’s not what the Lord does, is it? The Apostle Paul gives us instruction:
Walk in wisdom toward outsiders, making the best use of the time. Let your speech always be gracious, seasoned with salt, so that you may know how you ought to answer each person. Colossians 4:5-6 English Standard Version (ESV)
How should we put this advice into practice? Here’s what Calvin says:
Walk wisely. [Paul] mentions those that are without, in contrast with those that are of the household of faith. (Galatians 6:10.) For the Church is like a city of which all believers are the inhabitants, connected with each other by a mutual relationship, while unbelievers are strangers.
But why would he have regard [given to unbelievers], rather than to believers? There are three reasons: first,
lest any stumbling block be put in the way of the blind, (Leviticus 19:14,)
for nothing is more [likely] to occur, than that unbelievers are driven from bad-to-worse through our imprudence, and their minds are wounded, so that they hold religion more and more in abhorrence.
Secondly, it is lest any occasion may be given for detracting from the honor of the gospel, and thus the name of Christ be exposed to derision, persons be rendered more hostile, and disturbances and persecutions be stirred up.
Lastly, it is, lest, while we are mingled together, in partaking of food, and on other occasions, we be defiled by their pollutions, and by little and little become profane.
To the same effect, also, is what follows, redeeming the time, that is, because [interaction] with them is dangerous. For in Ephesians 5:16, he assigns the reason, because the days are evil. “Amidst so great a corruption as prevails in the world we must seize opportunities of doing good, and we must struggle against impediments…”
Therefore, walking wisely, we should not put stumbling blocks in our friend’s path, not dishonor the gospel, and not become profane, ourselves. Instead, we should use those opportunities we’ve been given to honor the name of Christ. But Calvin goes further:
Your speech. He requires suavity of speech, such as may allure the hearers by its profitableness, for he does not merely condemn communications that are openly wicked or impious, but also such as are worthless and idle. Hence he would have them seasoned with salt.
Profane men have their seasonings of discourse, but he does not speak of them; nay more, as witticisms are insinuating, and for the most part procure favor, he indirectly prohibits believers from the practice and familiar use of them. For he reckons as tasteless everything that does not edify. The term grace is employed in the same sense, so as to be opposed to talkativeness, taunts, and all sorts of trifles which are either injurious or vain.
That ye may know how. The man who has accustomed himself to caution in his communications will not fall into many absurdities, into which talkative and prating persons fall into from time to time, but, by constant practice, will acquire for himself expertness in making proper and suitable replies…
Nor does [Paul] merely say what, but also how, and not to all indiscriminately, but to everyone. For this is not the least important part of prudence — to have due regard to individuals.
Our conversations with friends should enlighten their (and our) morals and understanding. We should practice proper and suitable replies to each one who asks for a reason for the hope we have. We would do well to imitate Christ’s discussion with the woman at the well.
Two People Talking, 23 August 2012, Centers for Disease Control and Prevention, a work of the U.S. Federal Government in the public domain.