Well, there were those who appeared 'faithful' and had set up a 'doctrine' but it wasnt sound as Jesus clearly showed...
Matthew 15:1-6
1 Then came to Jesus scribes and Pharisees, which were of Jerusalem, saying,
2 Why do thy disciples transgress the tradition of the elders? for they wash not their hands when they eat bread.
3 But he answered and said unto them, Why do ye also transgress the commandment of God by your tradition?
4 For God commanded, saying, Honour thy father and mother: and, He that curseth father or mother, let him die the death.
5 But ye say, Whosoever shall say to his father or his mother, It is a gift, by whatsoever thou mightest be profited by me;
6 And honour not his father or his mother, he shall be free. Thus have ye made the commandment of God of none effect by your tradition.
If someone is teaching others it is okay to harm them, and shame them, and not show mercy or love, that is not the way of God. Surely those who are seeking him out faithfully will understand that murdering, and talking behind peoples back, are not things that come from the Spirit of Christ, nor the Holy Spirit of God. God is after all not only Spirit, but love.