John 13:19
Now I tell you before it come, that, when it is come to pass, ye may believe that I am he.
Cross-references
John 8:24 directly echoes the 'I am he' phrase and the necessity of believing it for salvation, deepening the call to faith.
John 8:58 declares 'before Abraham was, I am' — the same divine self-identification Jesus predicts will be proven true.
In John 14:29, Jesus repeats the same purpose for foretelling — that when it happens, you may believe.
John 14:1 immediately follows: after predicting betrayal to produce belief, Jesus urges them not to be troubled but to trust him.
In John 16:4, Jesus similarly foretells events so disciples will remember later, a parallel purpose.
In Isaiah 41:23, predicting the future proves deity; Jesus fulfills that test here, showing he is God.
Isaiah 43:10 has God say 'that you may know... that I am he' — Jesus applies this divine self-declaration to himself.
In Isaiah 48:5, God declares events beforehand to prevent idolatry, same purpose as Jesus' foretelling here.
Isaiah 41:22 challenges idols to declare the future as proof of deity — Jesus does exactly that to prove he is 'I am he'.
Isaiah 42:9 says God declares new things before they happen — Jesus fulfills this pattern, showing his divine identity.
Ezekiel 24:24 uses the same pattern: a prophetic sign given beforehand so that when it happens, people recognize God's identity — here Jesus applies it to his betrayal.
Luke 22:21 is the parallel account of Jesus predicting his betrayer at the Last Supper, the very event foretold here.
Revelation 1:18 says 'I died, and behold I am alive forevermore' — the resurrection confirms the divine identity Jesus predicted would be proven.
Revelation 1:17 presents the risen Christ saying 'I am the first and the last' — another 'I am' declaration affirming his deity.
In Matthew 24:25, Jesus warns ahead of time about future events, consistent with his practice here.