1 John 5:8
And there are three that bear witness in earth, the spirit, and the water, and the blood: and these three agree in one.
Cross-references
1 John 5:6
Parallel
In verse 6, the Spirit, water, and blood are already introduced as testimony about Jesus; verse 8 formally declares they agree.
1 John 5:7
Parallel
Verse 7 provides the heavenly counterpart—Father, Word, and Spirit—complementing the earthly witnesses here.
John 15:26
Parallel
In John 15:26, Jesus promises the Spirit will testify about him, directly corresponding to the Spirit's witness in the testimony here.
Matthew 18:16
Allusion
Matthew 18:16 cites the OT law of multiple witnesses, which 1 John 5:8 applies to the Spirit, water, and blood.
John 19:34
Historical context
John 19:34 records blood and water flowing from Jesus' side, the very witnesses 1 John 5:8 refers to.
Mark 14:56
Contrast
Mark 14:56 depicts false witnesses whose testimony didn't agree, contrasting with the true agreeing witnesses in 1 John 5:8.