Now the feast of Unleavened Bread, called the Passover, was drawing near, and the chief priests and the scribes were seeking a way to put Jesus to death, for they were afraid of the people. Then Satan entered into Judas, the one surnamed Iscariot, who was counted among the Twelve, and he went to the chief priests and temple guards to discuss a plan for handing him over to them. They were pleased and agreed to pay him money. He accepted their offer and sought a favorable opportunity to hand him over to them in the absence of a crowd. - Luke 22:1-6
Wednesday of Holy Week is often called Spy Wednesday because the Gospel for today's Mass relates how Judas conspired to betray Christ and hand him over to the authorities for just thirty pieces of silver.
Benedictine priest Aidan Kavanagh once wrote of the "night in which Jesus was betrayed by the worst in us all..." Judas, the betrayer, played the part for all of us who have betrayed the love of Christ in betraying one another.
Innocent and without sin, Jesus carried on his shoulders and suffered in his wounds the burden of our betrayal...
Here's a contemporary setting of "Pie Jesu" by Andrew. His comments about his past bullying combines the depths of our sinfulness and the mercy of God.
God's mercy meets us in our sinfulness. And that is where we need the Lord.