If you happen to have people in your life that rub you the wrong way, pay attention. These are in your life to mature you in the very nature of Jesus.
The truth is God loves everyone and we don't. We remain selective. Yes, we know the verses about loving your neighbor, loving your enemies, and that love never keeps score. But....that isn't us.
It should be.
We are given the Holy Spirit to treat others as would God. While Romans 2:1-5 will not budge from its accusation that whatever we are critical of we are guilty of ourselves, we still find justification with our inner-explanation as to why we don't care for certain individuals.
Each of these "individuals" is in our path for a reason. They are testing grounds to see how we are progressing in the areas He expects to be coming from His authentic disciples; love for others.
Why do some people, at this stage of our lives, still bug us? We still have that offensive childish nature to label others according to their behavior. We are often still in kindergarten where we are irritated by both the sin and the sinner. May we grow to realize the reason people bug us is one of the purposes of God.