The grapes of wrath are referenced in the Book of Revelation 14:19:
And the angel thrust in his sickle into the earth, and gathered the vine of the earth, and cast it into the great winepress of the wrath of God.
This is one of the Bible's hairier passages. You don't gather grapes with a sickle, you don't throw the whole vine into a winepress, and why does God have a winepress anyway?
The phrase is usually invoked to refer to a type of anger that hangs around, and stays, and gets stronger - the way that wine ferments and becomes more potent. That is probably the idea in The Battle Hymn of the Republic (which is where this wording first occurs), and almost certainly the sense in the John Steinbeck novel (which is where most people first meet the phrase).
Hi, Have a look here. html Then ask again, if you need more help. Clive
New words, one handy idiom, and a 2-minute quiz — delivered to your inbox to keep your streak alive.