It's probably not "his" but a description of what his gospel would look like if he did one. Quite a bit of that went on back then.
The Devil using Judas to kill Christ is one of the greatest ironies. Satan thinks he scored a great victory and ends up wearing Gatorade while his team suffers a huge loss.
> The Devil using Judas to kill Christ is one of the greatest ironies.
Yes... because, apparently, God used the Devil to use Judas to kill Jesus.