Commentaries:
Barnes' Notes
The passover - See the notes at Matthew 26:2, Matthew 26:17.
A feast of the Jews - This is one of the circumstances of explanation thrown in by John which show that he wrote for those who were unacquainted with Jewish customs.
Other Barnes' Notes entries containing John 6:4:
Hosea 14:5
Matthew 14:13-21
John 2:13
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