Philo Judaeus De Josepho 28

It is worth while, however, after having thus explained the literal account given to us of these events, to proceed to explain also the figurative meaning concealed under that account; for we say that nearly all, or that at all events, the greater part of the history of the giving of the law is full of allegories; now the disposition which we have at present under consideration, is called by the Hebrews Joseph; but the name being interpreted in the Greek language means, "the addition of the Lord," a name most felicitously given, and most appropriate to the account given of the person so called; for the democratic constitution in vogue among states is an addition of nature which has sovereign authority over everything;