“As you would that others do unto you, do also to them.”  This not only involves showing love and acts of kindness, it also involves radical mercy.  When a person falls into sin, he or she is to be prayed for while they work through their falling.  Even “tough love” can be applied in a Golden-Rule way.  “There, but for the grace of God go I.”  I put myself in their place.  If I were where they are, then I would want someone to hold me accountable and pray for me until I was restored and brought back to the community.