Often, after hearing the typical Sunday morning sermon, we are left with the impression that we are to separate ourselves from the sinner completely; yes, this helps remove their influence on our lives, but it also removes our influence in their lives. We can continue to ignore the sinner on their own turf, or maybe just wait for them to show up at the church building...isn't that a novel idea!
Several churches I'm aware of practice love to the max, but primarily among themselves. Too often we get so involved in our own church relationships that we overlook those on the outside. The church should be a refuge of love for the Christian, but not a place to hide from the sinner who needs our help.
Our light shines brightest when those around us have no lamps. Going into a dark sinful world is often scary and not very pleasant, but Jesus set the example of associating with sinners in order to teach them the good news, and if we ignore their silent pleas for help, we are missing the point and looking the wrong direction. Jesus set the example in Matthew 9:12,13:
But when he heard it, he said, "those who are well have no need of a physician, but those who are sick. Go and learn what this means, 'I desire mercy, and not sacrifice.' For I came not to call the righteous, but sinners."