There will be days of analysis of the processology of the Ted Cruz non-endorsement of Donald Trump in his RNC speech in Cleveland.
Actually, it's simple.
Ted Cruz is deeply embedded in the Evangelical Christian tradition and as such easily blends Biblical literalism with contemporary America.
What therefore could be better for him than appearing before a boisterous crowd as their would-be saviour, but having the crowd call for someone else instead?
Cruz is Jesus. Trump is Barabbas.
Above, a classic clip from 24 Hour Party People, where the logic of naming a band Barabbas is explained.