On the Migration of Abraham (51-55)

And what is meant by this I will explain more distinctly: a flavour is appreciable by the sight, not inasmuch as it is flavour, but so far as it is a mere substance, for in so far as it is flavour the sense of taste will judge of it; again a smell, in so far as it is a smell, will be decided upon by the nostrils, but inasmuch as it is a bodily substance, it will also be judged of by the eyes: and the other objects of sense will be tested in this manner; but voice is not appreciable by the sense of sight, neither inasmuch as it is a body, if indeed it is a body at all, nor inasmuch as it can be heard; but there are these two things in us which are wholly invisible—mind and speech;

but the sound that proceeds from us does not the least resemble the divine organ of voice; for one organ of voice is mingled with the air, and flies to a kindred region with itself, namely to the ears; but the divine organ consists of unmixed and unalloyed speech, which outstrips the sense of hearing by reason of its fineness, and which is discerned by a pure soul, by means of its acuteness in the faculty of sight.

Therefore, after having left all mortal things, God, as I have said before, gives, as his first gift to the soul, an exhibition and an opportunity of contemplating mortal things: and in the second place he gives it an improvement in the doctrines of virtue, in respect both of their numbers and of their importance; for he says, "And I will make thee into a mighty nation," using this expression with reference to the multitude of the nation, and with reference to the increase and improvement of what was already great;

and that this quantity in each kind, that is to say, both as to magnitude and as to number, was greatly increased, is pointed out by the king of Egypt, where he says, "For behold," says he, "the race of the children of Israel is a great multitude." [*] [*]

for he does not say here (as any one would say who paid attention to the connection of the words which he was using), a numerous multitude, but he says, "A great multitude," knowing that the word numerous by itself implies an imperfect multitude, unless in addition to its numbers it has the attributes of intelligence and knowledge; for what advantage is it to comprehend many subjects of speculation, unless each of them receives a power of growth to a suitable size; for in like manner a field is not perfect in which there are innumerable plants growing on the ground, and no plant has grown up by means of the skill of the husbandman so as to arrive at perfection, unless it is now able to produce fruit.