By the word of the Lord - By the command of God: Genesis 1:3, Genesis 1:6 etc. See the notes at Psalms 33:9.
Were the heavens made - That is, the starry heavens; the worlds above us: Genesis 1:1.
And all the host of them - All their "armies." The stars are represented as armies or marshalled hosts, led forth at his command, and under his direction - as armies are led forth in war. See Genesis 2:1; compare the notes at Isaiah 1:9.
By the breath of his mouth - By his word or command - as our words issue from our mouths with our breath. The idea here is, that God is the Creator of all things; and, as such, has a claim to praise; or, that as Creator he is entitled to adoration. To this he is entitled from the fact that he has made all things, and from the "manner" in which it has been done - the wisdom, power, goodness, skill, with which it has been accomplished.
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