John 17:9-12 I pray for them: I pray not for the world, but for them which thou has given me; for they are thine. And all mine are thine, and thine are mine; and I am glorified in them. And now I am no more in the world, but these are in the world, and I come to thee. Holy Father, keep through thine own name those whom thou has given me, that they may be one, as we are. While I was with them in the world, I kept them in thy name: those that thou gave me I have kept, and none of them is lost, but the son of perdition; that the scripture might be fulfilled.
‘I pray for them’ – here 7 things are mentioned that can be prayed for believers: to be kept from evil (17:11, 15); unity of all believers, as God and Christ are one (17:11, 21-23); the joy of Christ fulfilled in all believers (17:13); sanctification or separation of believers to the full work of God, as He had been set apart for this work (17:17-19; 10:36); world recognition of God’s love to believers (17:24); reunion with Christ (17:24); and to see His glory (17:24).
‘And all mine are thine, and thine are mine’ – this is a claim to perfect equality with God. Any believer can say that “all mine are Thine,” but only Christ can say all “Thine are Mine.” The claim is that all of Christ was the Father’s and all of the Father, is Christ’s.
‘None of them is lost, but the son of perdition’ – none is lost, but Judas who fell from the apostleship by transgression (Acts 1:20-25; Psa. 41:9; 69:25-29). Judas was included with those whom God gave to Christ (Matt. 10:1-20; Mark 3:13-19; 6:7-13; Luke 6:12-16).
‘Lost’ the Greek word apollumi. Used in John: to lose (6:12, 39; 12:25; 17:12; 18:9); perish (3:15-16; 6:27; 10:28; 11:50); destroy (10:10); and die (18:14).
‘Son of perdition’ – literally means the son of destruction, because he was destined to destruction. Used also of the Antichrist (2Thess. 2:3), and in the Septuagint of children of transgression (Isa. 57:4). Hebrews and Greeks called anyone who had a particular destiny, quality, or trait, the child of that thing, as “children of the kingdom” (Matt. 8:12; 13:38); “children of the bridechamber” (Matt. 9:15); “children of hell” (Matt. 23:15); “children of wrath” (Eph. 2:3); “children of wisdom” (Matt. 11:19; Luke 7:35); etc. Judas and the Antichrist have no relationship to each other as to parents, birth, life, death, etc. Both are simply destined to destruction by their own deeds. The Antichrist will die at the hands of Christ, while Judas hung himself (Dan. 7:11; Isa. 11:4; 2Thess. 2:8; Rev. 19:20).
‘That the scripture might be fulfilled’ The 11th Old Testament prophecy fulfilled in John (Psa. 41:9; 69:25-29; 109:8; Acts 1:20-25). Judas was not lost that prophecy might come to pass, but prophecy foretold the fact of his willful sin and lost state. He was lost because he refused to be saved; lost through his own avarice and stubbornness to come back to Christ even after his crime.