The Hymn calls upon all God's creatures to worship Him--collectively in the first verse, afterwards in groups. First group. Heavenly powers. Second group. Earthly powers. Third group. Earth and its component parts. Fourth group. Men. Notice first the leading verse of each group: 2. Angels--9. Winds (_spiritus_)--18. Earth--26. Children of men. The classification in the groups is evidently influenced by the 1st chapter of Genesis. In _v._ 4 the Waters above the firmament (Gen. i. 7) are {80} divided from the Wells, Seas, Floods of _vv._ 21, 22. The former appear here as Heavenly Powers, the latter as creatures of God in the Earth. The Showers and Dew of _v._ 8 are regarded as coming from Heaven. They appear therefore in group 1, but in its last verse, so that the transition is easy to the earthly powers amongst which they might have been placed. The second group includes the forces of Nature which more distinctly surround us on earth. There is some uncertainty in the various versions of this section. The Prayer Book, following, as usual, the Great Bible of 1539, has Dews and Frosts in _v._ 10, meaning probably Dews and Hoar Frosts. The Bible (A.V.) has Hoar Frosts coupled with Snows. It has Fire and Heat and also, in some Versions, Cold and Heat, but omits Winter and Summer. Sometimes there is contrast in the couples and sometimes the forces coupled together are of the same sort. In group 3, Earth is called up first as including the rest, which progress from that which does not move to that which does, ranging through the inanimate moving things, such as budding things and water, and the animate creation, such as move in the sea, the air and, whether wild or tame, upon the earth. Group 4 begins, like group 3, with an inclusive term "Children of Men": and proceeds through Israel, as God's People, and Israel's Priests, as God's special choice, to those who really serve God whether in this life or after it; concluding with the specially present service of the holy and humble, and, in particular, Ananias, Azarias, and Misael. {81} All these Creatures of God's hand, whether animate or inanimate, or the Forces which are behind both, are challenged to praise their Maker. They are called up in twos and threes, a great army, representing all the visible and invisible hosts of Heaven and Earth. In connection with this Hymn we should read Gen. i., Psalm civ., and Psalm cxlviii. Cantate Domino.