Monotheism in Jewish Writings: Philo II
Let us, therefore, fix deeply in ourselves this first commandment as the most sacred of all commandments, to think that there is but one God, the most highest, and to honour him alone; and let not the polytheistical doctrine ever even touch the ears of any man who is accustomed to seek for the truth, with purity and sincerity of heart; for those who are ministers and servants of the sun, and of the moon, and of all the host of heaven, or of it in all its integrity or of its principal parts, are in grievous error; (how can they fail to be, when they honour the subjects instead of the prince?) but still they sin less grievously than the others, who have fashioned stocks, and stones, and silver, and gold, and similar materials according to their own pleasure, making images, and statues, and all kinds of other things wrought by the hand; the workmanship in which, whether by statuary, or painter, or artisan, has done great injury to the life of man, having filled the whole habitable world.
On the Life of Moses
The Decalogue, 65
p. 524
Philo. (1993). The Works of Philo: Complete and Unabridged (C. D. Yonge, Trans.). Hendrickson Pub. http://books.google.co.uk/books?id=PDy2AAAACAAJ&hl=&source=gbs_api