John 6:70 reveals Jesus knew one disciple was a devil; here Satan enters that disciple, fulfilling the earlier warning.

After Satan enters Judas, John 18:3 shows him leading the arrest party—the immediate result of his betrayal.

Luke 22:3 explicitly states 'Satan entered Judas' — a direct synoptic parallel to this same moment.

Psalm 41:9 is the scripture Jesus cites about a trusted friend eating his bread then turning against him—directly fulfilled in Judas.

Matthew 27:3 shows Judas's later remorse for the betrayal, contrasting the confident urgency of Jesus's command to do it quickly.

Acts 1:25 refers to Judas' apostasy and replacement, looking back on his betrayal and its consequences.

2 Timothy 2:26 warns of being captured by the devil to do his will—exactly what happens to Judas here.

Ephesians 2:2 describes the spirit of Satan working in the disobedient—same diabolical influence seen here entering Judas.

Acts 5:3 describes Satan filling Ananias's heart to lie — similar demonic influence leading to sin and betrayal.