Judges 5:4

Lord, when thou wentest out of Seir Thus the prophetess, by a sudden apostrophe, addresses him, not as their present deliverer, but as the God who had formerly exerted his miraculous power to bring them into the promised land; leaving her hearers to recollect, that it was the same power which had now subdued the Canaanites, that at first expelled them; the same power which had now restored to the Israelites the free enjoyment of their country, that at first put them in possession of it. In other words, being to praise God for the present mercies, she takes her rise higher, and begins her song with the commemoration of the ancient deliverances afforded by God to his people; and the rather, because of the great resemblance this had to them, in the miraculous manner of them. Seir and Edom are the same place, and these two expressions mean the same thing, even God's marching at the head of his people, from Seir or Edom, toward the land of Canaan. The earth trembled God prepared the way for his people, and struck a dread into their enemies, by earthquakes, as well as by other terrible signs. The heavens dropped That is, thou didst send storms and tempests, thunder and lightning, and other tokens of thy displeasure upon thine enemies. The books of Moses, indeed, do not mention any earthquake as happening during their march from Seir in Edom, to war against Sihon and Og, and take possession of their land; but it is highly probable, from what is repeatedly spoken of the terror occasioned by their march, and the universal fear that was spread round because of them, that it was attended with such commotions of nature. See Psalms 68:7; Isaiah 64:3; Habakkuk 3:6; Deuteronomy 1:19.