De Abrahamo
Philo Judaeus
The works of Philo Judaeus, the contemporary of Josephus, volume 2. Yonge, C. D., translator. London: Henry G. Bohn, 1854.
And there is evidence in support of what has here been said to be derived from the change and alteration of his name: for he was anciently called Abram, but afterwards he was named Abraham: the alteration of sound being only that which proceeds from one single letter, alpha, being doubled, but the alteration revealing in effect an important fact and doctrine;
for the name Abram being interpreted means "sublime father;" but Abraham signifies, "the elect father of sound." The first name being expressive of the man who is called an astronomer, and one addicted to the contemplation of the sublime bodies in the sky, and who was versed in the doctrines of the Chaldaeans, and who took care of them as a father might take care of his children.
But the last name intimating the really wise man; for the latter name, by the word sound, intimates the uttered speech; and by the word father, the dominant mind. For the speech which is conceived within is naturally the father of that which is uttered, inasmuch as it is older than the latter, and as it also suggests what is to be said. And by the addition of the word elect his goodness is intimated. For the evil disposition is a random and confused one, but that which is elect is good, having been selected from all others by reason of its excellence.
Therefore, to him who is addicted to the contemplation of the sublime bodies of the sky there appears to be nothing whatever greater than the world; and therefore he refers the causes of all things that exist to the world. But the wise man, beholding with more accurate eyes that more perfect being that rules and governs all things, and is appreciable only by the intellect, to whom all things are subservient as to a master, and by whom every thing is