Reference for Psalms 33:6

בִּדְבַ֣ר יְ֭הוָה שָׁמַ֣יִם נַעֲשׂ֑וּ וּבְר֥וּחַ פִּ֝֗יו כָּל־צְבָאָֽם׃

By the word of the LORD were the heavens made; And all the host of them by the breath of His mouth.

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ספר השרשים