What if Judas didn't do it?

[BrianSoddingBoru4]

According to the story, the authorities didn’t know what Jesus looked like (hence the literary device of a betrayer). Jesus had to be betrayed to make the myth work. If it hadn’t been Judas, there would have been some other pre-ordained rat.

I'm not sure I follow. What is the relationship between the authorities not knowing what he looked like, and Jesus needing to be betrayed to make the myth work?

How would the authorities, who didn’t know what Jesus looked like, have been able to arrest him without the services of a betrayer? Jesus, knowing he’d be killed, could not have turned himself in. That would be tantamount to suicide. 

For the Redeemer myth to work, Jesus had to be killed through the agency of others. If his death was all the was required, he could have simply taken poison or thrown himself under a passing ox cart.

Boru