Genesis 2:1 - Clarke's commentary and critical notes on the Bible

Thus the heavens and the earth were finished, and all the host of them. And all the host of them - The word host signifies literally an army, composed of a number of companies of soldiers under their respective leaders; and seems here elegantly applied to the various celestial bodies in our system, placed by the Divine wisdom under the influence of the sun. From the original word צבא tsaba, a host, some suppose the Sabeans had their name, because of their paying Divine honors to the heavenly bodies. From the Septuagint version of this place, πας ὁ κοσμος αυτων, all their ornaments, we learn the true meaning of the word κοσμος, commonly translated world, which signifies a decorated or adorned whole or system. And this refers to the beautiful order, harmony, and regularity which subsist among the various parts of creation. This translation must impress the reader with a very favorable opinion of these ancient Greek translators; had they not examined the works of God with a philosophic eye, they never could have given this turn to the original.