“But speaking the truth in love, (you) may grow up into Him in all things.”
Telling people the correcting truths about themselves may be very hard. Perhaps a Christian brother or sister, a friend, or an associate, has done something or said something that unjustly offended someone, did harm to others, or is self destructive and needs to be confronted with the truth. If such is the case, prepare to do so as Christ would – leaving that person feeling loved. That takes prayer. You are called help such persons, but not to hurt them.