Isaiah 34:16 - Exposition

Seek ye out of the book of the Lord . By "the book of the Lord" some understand a collected volume of Moses and the prophets, psalmists, etc; previous to Isaiah's time, which they suppose to have existed in his day. But there is no evidence of any such collection. It is better to understand the expression of Isaiah's own prophecies, or of such a collection of them as he had made previously to the composition of the present chapter. Nothing contained in the entire book should, he says, fail of its accomplishment. Even the minutiae of the present chapter should, each and all, have their fulfillment, though not, perhaps, in every case a literal one. My mouth … his Spirit . The "mouth" of the prophet and the "Spirit" of God, which dictates to him what he is to write, are in accord; and the Spirit will bring to pass what the mouth inspired by him has "commanded."