As we are in Holy Week, the most likely inspiration for the theme of Betrayal is that of Jesus by Judas – Durer picture above.
And yet, was it a betrayal? To be betrayed there has to be a both a loyalty, and a harm.
There has long been a train of thought that Judas was required, even destined, to hand Jesus over, because without Jesus being handed over there would be no Resurrection. If we buy this argument then Judas was not betraying Jesus, but helping him.
It all rather depends on your view of predestination; if you believe in free will, then Judas could have not handed Jesus over, whilst God could still have found a way for the events to play out. However, in these circumstances, the fact that Judas chose to do so then becomes a betrayal, and adds to the pressure on Jesus, as he then knows that one of his disciples has betrayed him. It could even be that the words
are not, as I always interpreted, a command to go and inform the chief priests, but an instruction to go and do what he was going to decide to do, as the suspense was unbearable (this is almost certainly a minority reading, as John’s Gospel is always showing Jesus as in control – however, I find that contemplating ideas like this can add to the understanding of what happened, even if they are “wrong”).