Galatians 6:1-5 Dear brothers and sisters, if another believer is overcome by some sin, you who are godly should gently and humbly help that person back onto the right path. And be careful not to fall into the same temptation yourself. Share each other’s burdens, and in this way obey the law of Christ. If you think you are too important to help someone, you are only fooling yourself. You are not that important.
Pay careful attention to your own work, for then you will get the satisfaction of a job well done, and you won’t need to compare yourself to anyone else. For we are each responsible for our own conduct. (NLT)
When Biblical fellowship is really working well, it looks like this: spiritual Christians who see other Christians sinning will lovingly confront them to turn them back to God’s will. But this requires discernment as to the likelihood that the person confronted will respond positively, as well as humility in the confronter so as not to become merely critical.