Then Satan entered into Judas called Iscariot, who was of the number of the twelve. He went away and conferred with the chief priests and officers how he might betray him to them. And they were glad, and agreed to give him money. So he consented and sought an opportunity to betray him to them in the absence of a crowd. (Luke 22:3-6 ESV)
Judas gave his name to the world as the greatest traitor to ever live. And for what? For pointing Jesus out when he was relatively isolated. Jesus even points this out when the gang came to get him at night, “Day after day I sat in the temple teaching, and you did not seize me” (Matt. 26:55 ESV). The temple rulers feared the crowds, so they didn’t try to seize him in the middle of the day, but they didn’t have anyone follow him either. Without Judas, they appear to have been stymied.
But that doesn’t change the fact that what Judas did was almost nothing. He said, “I’ll show you who Jesus is. This is him right here.” If anyone had walked into the garden that night, even a Roman soldier, and asked if the Master was present, which of the disciples would have asked, “Who wants to know?” Any of them probably would have pointed him out himself.
Great evil is often committed with the most boring actions. Apathy is the frontrunner. Laziness, sloppy work, deliberate ignorance, truthful gossip, all have their place in the hallway of boring evil.
Even Judas was horrified by the results of his decision. I can’t imagine what he thought would happen or even his motive, except that asks this of the chief priests when he first goes to them: “What will you give me if I deliver him over to you?” (Matt. 26:15 ESV).
Your favorite Bible teacher John Calvin writes:
It is particularly worthy of notice, that the cause and source of so great blindness in Judas was avarice, which makes it evident that it is justly denominated by Paul the root of all evils, (1 Timothy 6:10.) To inquire here whether or not Satan entered into Judas bodily is an idle speculation. We ought rather to consider how fearfully monstrous it is, that men formed after the image of God, and appointed to be temples for the Holy Spirit, should not only be turned into filthy stables or sinks, but should become the wretched abodes of Satan.