Judas Iscariot, after betraying Christ, hanged himself as recorded by Matthew. Later, as described by Luke, his decomposing body slipped from the rope, fell headlong, burst open in the middle, and all his entrails gushed out. This ignominious end was that of the son of perdition, as mentioned in John 17:12.

The man of sin, also known as the son of perdition, is identified with sin and lawlessness. He is flagrantly against God's law, anti-God, and anti-Christ. The title "son of perdition" was also applied to Judas, indicating a similar character of betrayal and opposition to Christ. This man will be destroyed, annihilated, showing the characteristics of one destined for destruction. He exalts himself above every so-called god and sits in the temple of God in Jerusalem, proclaiming himself to be God. This act of blasphemy is literal, not figurative, emphasizing the real and literal nature of the events described. The man of sin is associated with other prophecies, such as the little horn in Daniel 7:8, who speaks pompous words and makes war against the saints, and the false prophet in Revelation 16:13 and 17:1-6, who is linked with the beast and operates against Christ. These scriptures indicate that the man of sin is a religious figure working on a worldwide scale, not a leader within the true church. His actions and influence are significant on a global level, with his headquarters in Jerusalem, alongside the beast.

The concept of the "Son of Perdition" appears within a broader treatment of the spirit of antichrist, showing how Paul's warning connects directly to John's teaching in I John 2. Paul, writing in II Thessalonians 2:3-4, identifies "the man of sin" and "the son of perdition" as one who opposes and exalts himself above all that is called God, going so far as to sit in the temple of God and declare himself to be God. This figure is later identified as the False Prophet, the powerful, miracle-working religious leader described in Revelation who works alongside the political-military Beast during the end-time period preceding Christ's return. The Son of Perdition represents the ultimate, final manifestation of the antichrist spirit that has been active since apostolic times. While many antichrists have existed throughout church history—individuals and movements that deny Jesus is the Christ, distort His nature, or oppose His teachings through subtle deception—this figure embodies the complete culmination of that spirit, having his mind and will entirely taken over by satanic influence. He is described as performing great signs, even causing fire to come down from heaven, deceiving those who dwell on the earth through lying wonders. He compels worship of an image of the Beast and empowers that image to speak, killing those who refuse to comply. This False Prophet, or Son of Perdition, works in tandem with the Beast: the religious system he leads supports and encourages the Beast's rise to political power, while the Beast in turn uses military force to enforce religious uniformity. Together they represent the pinnacle of Satan's deceptive work, convincing much of the world during the Great Tribulation that Christ Himself is the antichrist—a diabolical inversion designed to prevent repentance when Christ actually returns. Ultimately, both the Beast and this False Prophet, the Son of Perdition, will be captured and cast alive into the Lake of Fire at Christ's return. This teaching serves a larger purpose: rather than encouraging speculation about identifying this figure by name—a common but misguided obsession that has wasted decades of believers' attention—the emphasis rests on recognizing that the spirit of antichrist has operated continuously since the apostolic era and will intensify toward a climactic expression in this end-time figure. The real danger lies not in failing to identify the Son of Perdition in advance, but in failing to remain vigilant against the ongoing, subtle deceptions of the antichrist spirit at work in the present. Believers are called to test every spirit by God's Word, rely on the anointing of the Holy Spirit for discernment, and remain faithful until Christ's glorious return, when every counterfeit power, including the ultimate Son of Perdition, will be finally and permanently destroyed.

In John 17:12, Jesus speaks of the son of perdition, indicating that this individual was lost as prophesied in Scripture. The phrase "son of perdition" is in the nominative case, distinguishing it from the words "of them" which precede it. This suggests that Jesus is saying, "I have lost none of them whom You gave Me. None at all. But the son of perdition has been lost as has been prophesized in Scripture." The reference here is to Psalm 41:9, which speaks of betrayal by a familiar friend. The case of Judas, referred to as the son of perdition, illustrates what would happen to anyone without God's regeneration and ongoing care.