Norman L. Geisler and Frank Turek explain:
The New Testament writers are also honest about Jesus. Not only do they record self-incriminating details about themselves, they also record embarrassing details about their leader, Jesus, that seem to place him in a bad light. Jesus is not believed by his own brothers (John 7:5), is thought to be a deceiver (John 7:12), is deserted by many of his followers (John 6:66), turns off “Jews who had believed in him” (John 8:30-31) to the point that they want to stone him (v. 59), and is called a “drunkard” (Matt. 11:19), a “madman” (John 10:20), and “demon-possessed” (Mark 3:22; John 7:20, 8:48).
This is certainly not a list of events and qualities the New Testament writers would choose if they were trying to depict Jesus as the perfect, sinless God-man. Nor are these qualities congruent with the Jewish expectation that the Messiah would come to free them from political oppression.
In addition to embarrassing details, there are several difficult sayings attributed to Jesus that the New Testament writers would not have included if they were making up a story about Jesus being God. Again, the best explanation is that the New Testament writers were not playing fast and loose with the facts but were extremely accurate in recording exactly what Jesus said and did.– Norman L. Geisler and Frank Turek – 10 Things You Should Know about the Reliability of the New Testament Writers
Wouldn’t the disciples want to show Jesus in the best light? Doesn’t this count as evidence for the New Testament?