Where did the Jesus myth come from?

[Lion IRC]

And then he told them, "Go into all the world and preach the Good News to everyone. (Mark 16:15)

Excuse me sir, my study Bible tells me verses 9-20 were a later addition i.e. another bit of fabrication on the Jesus story. Care to explain?

It's not an addition to what Jesus said.

If you dont like Mark 16:15 how about...

Matthew 28:19
''Therefore go and make disciples of all nations, baptizing them in the name of the Father and of the Son and of the Holy Spirit."

No?

How about Luke 24:47?
''And that repentance and remission of sins should be preached in his name among all nations, beginning at Jerusalem.''

Not good enough?

If you're gonna call them fabrications why bother to be selective?
Just put the historicity of Jesus and all His words into the same atheist trash can of disbelief along with the entire bible - thats where ALL theism belongs right?

Why bother about the historicity of Jesus when you're simply going to dismiss Him as lunatic or liar rather than Lord?