Today’s title denotes the structure of Psalm 148. In clarity and symmetry, our author addresses two realms in which the praises of the Lord are to resound: the heavens and the earth. Each call to worship is followed by reasons for praise.... One of my study Bibles takes the occasion of certain prominent passages in scripture to expound a point of systematic theology.  Psalm 148 was the text chosen to highlight the nature of God as CREATOR.  It makes sense given that this chapter so powerfully & beautifully extols Yahweh as the one true sovereign over both the genesis of all things in the first place and the new creation of redemption for His people and the world sin has corrupted. Psalm 148 is a call for us to join all creation in praising the Lord of heaven and earth.