Truth and love

In the early church some of my disciples encountered a man preaching the repentance of sins according to the baptism of John. They took him aside privately afterward and explained the fullness of the Christian faith to him in greater detail, and he received it. You too will encounter those with good intentions and incomplete understanding. It is debatable whether you should enter a public confrontation with your enemies, but these people are not your enemies. Take a position of humility and grace to instruct them in greater understanding of the truth. Love them in such a way to make it easy for them to respond.