We can see that Judas was the one that Jesus trusted above others.
He was the Treasurer for the wandering band of disciples.
It would have been Judas who made the plans,
hired the donkey for the entry to Jerusalem,
probably booked the room for the supper.

Naturally he would have been the one
to make the arrangements for negotiations
with the High Priest and the city authorities,
who were disturbed by the effect on the populous
of the radical, revolutionary, message of Jesus.

So, Jesus sent him off to arrange a meeting,
as is reported, but misunderstood, in John 13.

After the supper they move to the rendez-vous
but have a protracted time of waiting
until Judas turns up with an escort
to take Jesus to the meeting place.

The disciples misunderstand the situation and resist
(though their use of a weapon seems highly unlikely,
for even its possession would have been an offence).
Judas confirms the arrangements by a quiet word with Jesus
(an interchange again misunderstood) and departs for the palace.
There Jesus refuses to bend to the demands of authority,
and uses strong revolutionary expressions,
which leave them no alternative but
to pass him for trial by the Romans.

Judas expressed his dismay by committing suicide.
the other disciples merely fled the scene in fear.
Yet, through their biassed reporting,
it is Judas whom we condemn.