How does this work in our everyday lives? We need to start with the acceptance that there is a spiritual war going on and everyone is not on the same side. The public division is between those who claim to be born again and those who don’t. When someone tells me they have met Jesus, I accept that at the moment and operate on that acceptance. Time will tell is we are on the same side. If they mock God, it is also clear.
We need to also remember that the dividing line is not our family, or local church, our political party, our denomination. The church you attend will have people in it who are living a lie. They may look good but they are on the other side. Paul address this concern,
(1Co 5:9-11 NAS77) I wrote you in my letter not to associate with immoral people; I did not at all mean with the immoral people of this world, or with the covetous and swindlers, or with idolaters; for then you would have to go out of the world. But actually, I wrote to you not to associate with any so-called brother if he should be an immoral person, or covetous, or an idolater, or a reviler, or a drunkard, or a swindler--not even to eat with such a one.I used the NASB because it is clearer there.
So? Know which side you are on. Realize that those on the other side are on the other side. Stand your ground in knowledge and wisdom.