Show mercy to doubters
Jude 1:20-23 GWDear friends, use your most holy faith to grow. Pray with the Holy Spirit's help.  Remain in God's love as you look for the mercy of our Lord Jesus Christ to give you eternal life.  Show mercy to those who have doubts.  Save others by snatching them from the fire of hell. Show mercy to others, even though you are afraid that you might be stained by their sinful lives.
Too bad they don't follow what Christ says ... ever. They give reason to be ignored. Anyone calling themselves followers of Christ, yet make rules that supercede his, shows they think they know better than Christ ... these people are to unequivocally be ignored if not shunned for their vain insolence.
Matthew 18:15-22 NET"If your brother sins, go and show him his fault when the two of you are alone. If he listens to you, you have regained your brother.  But if he does not listen, take one or two others with you, so that at the testimony of two or three witnesses every matter may be established.  If he refuses to listen to them, tell it to the church. If he refuses to listen to the church, treat him like a Gentile or a tax collector.  "I tell you the truth, whatever you bind on earth will have been bound in heaven, and whatever you release on earth will have been released in heaven.  Again, I tell you the truth, if two of you on earth agree about whatever you ask, my Father in heaven will do it for you.  For where two or three are assembled in my name, I am there among them."  Then Peter came to him and said, "Lord, how many times must I forgive my brother who sins against me? As many as seven times?"  Jesus said to him, "Not seven times, I tell you, but seventy-seven times!