Philo Judaeus De Opificio Mundi 47

This is the cause why the earth bore fruit and herbs before God proceeded to adorn the heaven. And next the heaven was embellished in the perfect number four, and if any one were to pronounce this number the origin and source of the all-perfect decade he would not err. For what the decade is in actuality, that the number four, as it seems, is in potentiality, at all events if the numerals from the unit to four ¹ are placed together in order, they will make ten, which is the limit of the number of immensity, around which the numbers wheel and turn as around a goal.