John 20:8
Then went in also that other disciple, which came first to the sepulchre, and he saw, and believed.
Cross-references
John 20:25
Contrast
In John 20:25, Thomas demands to see; here John believes without seeing Jesus—a direct contrast of faith responses.
John 20:29
Parallel
In John 20:29, Jesus blesses those who believe without seeing—exactly what John does here at the empty tomb.
John 2:22
Parallel
John 2:22 describes the disciples remembering and believing after the resurrection—parallel to the beloved disciple's immediate belief here.
Mark 16:13
Contrast
Mark 16:13 reports that others did not believe the two disciples' report—contrasting with the beloved disciple who believed after seeing. Belief vs. doubt.