Dan (sources)
Philo
Leg. 2:94 -- Such a serpent Jacob boasts that Dan is, and he speaks thus: "Dan is, and he speaks thus: "Dan will judge his people, as one of the tribes of Israel:" [Genesis 49:16] and again, "Let Dan be a serpent in the path, sitting upon the road, biting the heel of the horse, and the rider shall fall backwards, waiting the salvation of the Lord." The fifth son of Leah is Issachar, the legitimate son of Jacob; but if the two sons of Zilpah are counted he is the seventh; but the fifth son of Jacob is Dan, the son of Billah, the handmaid of Rachel; and the cause of this we will investigate in the proper place, but concerning Dan we must examine further now.
Leg. 2:96-97 -- (96) And now she begins to form the mortal race--now the mortal race subsists by imbibing; for, like a foundation, the sense of taste is the cause of the duration of animals; but the name Billhah, being interpreted, means imbibing. From her was born Dan, which name being interpreted means judgment, for this kind distinguishes between the separates immortal from mortal things, therefore he prays that he may become a workman of temperance. But he will not pray for Judah, for Judah already had the capacity of praying to and pleasing God: (97)"Therefore let Dan," says he,"be a serpent in the path." -- One path is the soul. For as in the roads one may behold a great variety of living beings, inanimate and animate, irrational and rational, good and bad, slaves and free, young and old, male and female, strangers and natural citizens, sick and healthy, mutilated and perfect; so also in the soul there are motions inanimate, and imperfect, and diseased, and slavish, and female, and innumerable others of the class of evils; and on the other hand, there are motions which are living, and perfect, and masculine, and free, and healthy, and ripe, and virtuous, and genuine, and
Leg.