Philo Judaeus De Posteritate Caini 18

[18] But perhaps the meaning which is intended under this expression may be something like this:—The wise man, being always desirous to comprehend the nature of the Ruler of the universe, when he is proceeding along the road which leads by knowledge and wisdom, previously meets with words of God, among which he rests for a while; and though he had previously determined to proceed by some other road, he now stops and hesitates; for the eyes of his mind being opened, he sees more clearly that he had entered upon a chase after a thing which was difficult to overtake, which constantly retreated before him, and was always at a distance, and which outstripped its pursuers by placing an immeasurable distance between them.