Philo Judaeus De Ebrietate 36

Now of the soul attached to its mother, yielding to the opinions of the many and constantly changing its appearance in accordance with the various forms arising from the manifold and different ways of life, after the manner of the Egyptian Proteus, who was able to assume the likeness of anything in the whole world, and to conceal his real form so as to render it entirely invisible, the most visible image is Jothor, a compound of pride, who evidently represents a city and constitution of men from all quarters, and of all nations, carried away by vain opinions.