Philo Judaeus De Migratione Abrahami 140

[140] for then it will sacrifice its beloved son, not a man (for the wise man is not a slayer of his children), but the male offspring of a virtuously living soul, the fruit which germinates from it, as to which it knows not how it bore it, the divine shoot, which, when it appears, the soul then having appeared to be pregnant, confesses that it does not understand the good which has happened to it, saying, "Who will tell to Abraham?" ¹ as if, in fact, he would refuse to believe about the rising up of the self-taught race, that "Sarah was suckling a child," not that the child was being suckled by Sarah. For the self-taught offspring is nourished by no one, but is itself the nourishment of others as being competent to teach, and having no need to learn;