Time & Location
About the Event
Spy Wednesday gets its name because this is the day on which Judas betrayed Jesus to the Sanhedrin. Because Judas is thought to be sneaky, his actions conjured up the image of a spy. The synoptic gospels all include an account of the betrayal — Matthew 26:12-14, Mark 14:10-12, Luke 22:3-6.
This is how the Gospel of Luke recounts the events:
Then Satan entered into Judas called Iscariot, who was one of the twelve; he went away and conferred with the chief priests and officers of the temple police about how he might betray him to them. They were greatly pleased and agreed to give him money. So he consented and began to look for an opportunity to betray him to them when no crowd was present. (Luke 22:3-6)