Isaiah 34:16

Seek ye out -Lock carefully at the prediction, and its fulfillment. This seems to be addressed to the inhabitants of that land, or to any who might doubt, or be disposed to examine. They were invited to compare the prediction with the fulfillment, and see how literally all would be fulfilled - an examination which may be made now, and the prediction will be seen to have been accomplished with most surprising particularity and accuracy. The book of the Lord -The book of Yahweh, which he has caused to be written, referring, perhaps, especially to what Isaiah has here recorded; including also what had been uttered by the other prophets in regard to Edom.