Gospel of Mark
The Book of Mark is one of the four canonical Gospels. It was most likely the earliest of the four to be written, scholars typically estimate it was written between 70CE and 90CE, by an unknown author.
In Mark 9:1 Jesus says this to his followers:"Verily I say unto you, That there be some of them that stand here, which shall not taste of death, till they have seen the kingdom of God come with power."
This implies that the endtimes were to happen within the lifetime of the apostles which is a view in conflict of orthodox Christian doctrine.
17And when he was gone forth into the way, there came one running, and kneeled to him, and asked him, Good Master, what shall I do that I may inherit eternal life?
18And Jesus said unto him, Why callest thou me good? there is none good but one, that is, God.
Here Jesus is portrayed making it clear that he is not God, and that he is not good. This conflicts with beliefs in the doctrine of the Trinity and the divinity of Jesus.