It would be a sign of great simplicity to think that the world was created in six days, or indeed at all in time; [...] Time is a thing posterior to the world. Therefore it would be correctly said that the world was not created in time, but that time had its existence in consequence of the world. For it is the motion of the heaven that has displayed the nature of time.

Allegories of the Sacred Laws (Legum allegoriae), Book I, §2; tr. C. D. Yonge, The works of Philo Judaeus (1854), Vol. 1, pp. 52–53.