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.
Lord, when thou wentest out of Seir ... In this highly figurative style, which is borrowed from the magnificent song of Moses (Deuteronomy 32:2), and was afterward adopted also, with a slight variation, by the Psalmist (Psalms 68:7-8), allusion is made to God's interposition on behalf of His people. Seir and the field of Edom represent the mountain range and the plain, extending along the south from the Dead Sea to the Elanitic Gulf. "Thou wentest out" indicates the particular form in which Yahweh appeared on this occasion for the deliverance of Israel-namely, in a violent tempest which, as may be gathered from this description, blew from the south or southwest.