Commentaries:
Barnes' Notes
We are sure ... - See a similar confession of Peter in Matthew 16:16, and the notes at that place. Peter says we are sure, in the name of the whole of the apostles. Jesus immediately cautions him, as he did on other occasions, not to be too confident, for one of them actually had no such feelings, but was a traitor.
Other Barnes' Notes entries containing John 6:69:
Romans 9:26
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