John 20:27
Then saith he to Thomas, Reach hither thy finger, and behold my hands; and reach hither thy hand, and thrust it into my side: and be not faithless, but believing.
Cross-references
John 20:25 records Thomas's demand to see and touch Jesus' wounds; here Jesus directly invites him to do exactly that.
John 20:20 describes Jesus showing his hands and side to the other disciples earlier — now he does the same for Thomas.
John 20:17 has Jesus telling Mary not to cling to him, while here he invites Thomas to touch — a contrast in resurrection appearances.
In Matthew 17:17, Jesus uses the same word 'faithless' to rebuke a generation — directly paralleling his call to Thomas to stop being faithless.
1 John 1:1 (the likely intended cross-reference) speaks of handling the Word of life, directly paralleling Thomas's physical touch of Jesus' wounds.
Luke 24:39 has Jesus showing his hands and feet and inviting touch — the same physical proof Jesus offers Thomas here.
Mark 16:14 also records Jesus rebuking the disciples for unbelief after his resurrection — parallel to his gentle rebuke of Thomas here.
Romans 4:19 describes Abraham's faith despite his body being as good as dead — contrasting with Thomas's need to see physical proof.
1 Timothy 1:14-16 highlights Jesus' longsuffering toward Paul as a pattern; similarly, Jesus shows patience toward Thomas's unbelief.