1. The royal titles by which the great God here makes himself known, and distinguishes himself from all pretenders, speak very much his glory (v. 5): Thus saith God the Lord. And who are thou, Lord? Why, he is the fountain of all being and therefore the fountain of all power. He is the fountain of being, 1. In the upper world; for he created the heavens and stretched them out (ch. xl. 22), and keeps the vast expanse still upon the stretch. 2. In the lower world: for he spread forth the earth, and made it a capacious habitation, and that which comes out of it is produced by his power. 3. In the world of mankind: He gives breath to the people upon it, not only air to breathe in, but the breath of life itself and organs to breathe with; nay, he gives spirit, the powers and faculties of a rational soul, to those that walk therein. Now this is prefixed to God's covenant with the Messiah, and the commission given him, not only to show that he has authority to make such a covenant and give such a commission, and had power sufficient to bear him out, but that the design of the work of redemption was to maintain the honour of the Creator, and to restore man to the allegiance he owes to God as his Maker.