Against Apion

What are the things then that we are commanded, or forbidden? They are simple, and easily known. The first command is concerning God: and affirms that God contains all things; and is a being every way perfect, and happy; self-sufficient, and supplying all other beings: the beginning, the middle, and the end of all things.⁠a He is manifest in his works, and benefits; and more conspicuous than any other being whatsoever: but as to his form and magnitude he is most obscure. We see his works; the light, the heaven, the earth, the sun, and the moon, the waters, the generations of animals, the productions of fruits. All men ought to follow this being; and to worship him in the exercise of virtue. For this way of worship of God is the most holy of all others.