LORD, when thou wentest out of Seir, when thou marchedst out of the field of Edom, the earth trembled, and the heavens dropped, the clouds also dropped water. When thou wentest out of Seir - Here is an allusion to the giving of the law, and the manifestation of God's power and glory at that time; and as this was the most signal display of his majesty and mercy in behalf of their forefathers, Deborah very properly begins her song with a commemoration of this transaction.
Related Commentaries of Judges 5:4
Judges 5:4
4 LORD, when thou wentest out of Seir, when thou marchedst out of the field of Edom, the earth trembled, and the heavens dropped, the clouds also dropped water.