He puts this question to him because he wishes the man to confess voluntarily and spontaneously, of his own accord, so that he may not imagine that every thing is done out of necessity; for he who had slain another through necessity, would have confessed unwillingly, as having done the deed unwillingly; since that which does not depend upon ourselves does not deserve accusation; but the man who has done wrong intentionally denies it; for those who do wrong are liable to repentance. Therefore, he has interwoven this principle in all parts of his legislation, because the Deity himself is never the cause of evil.
Philo on Guilt Confession and the Nature of Evil
The Midrash of Philo 9:2