John 6:64
But there are some of you that believe not. For Jesus knew from the beginning who they were that believed not, and who should betray him.
Cross-references
John 6:36 shows Jesus saying some have seen Him yet do not believe, directly matching the unbelief mentioned here.
John 6:70 calls one of the twelve a devil, immediately identifying the betrayer from the main verse.
John 6:71 names Judas as the betrayer, directly identifying the one Jesus knew would betray him.
In John 2:24, Jesus knows all men — directly parallel to knowing who believes and betrays.
In John 2:25, Jesus knows what is in man — same divine insight into hearts.
John 8:38-47 attributes unbelief to the devil as father, explaining why Jesus knew some would not believe.
John 10:26 states unbelief stems from not being Jesus' sheep, directly explaining the basis of his foreknowledge.
John 13:10 has Jesus saying not all are clean, referencing Judas, paralleling his knowledge of betrayal.
In John 13:11, Jesus knows his betrayer — the same specific foreknowledge of Judas.
John 13:18-21 quotes Scripture to foretell betrayal, showing Jesus' prior knowledge of Judas's act.
John 5:42 shows Jesus knowing his audience lacks love for God, paralleling his knowledge of unbelief.
In 2 Timothy 2:19, the Lord knows those who are his — directly parallels knowing the believers and non-believers.
In Matthew 9:4, Jesus knows people's thoughts — same ability to perceive inner belief.
In Mark 2:8, Jesus perceives their reasoning — same insight into hearts and intentions.
Mark 3:19 identifies Judas Iscariot as the betrayer, matching Jesus' foreknowledge of the betrayer here.
In Romans 8:29, God foreknows his people — related to Jesus foreknowing who believes.