Moses now had to content himself with the certainty that the pious were sure of their deserts; without, however, learning from God, how it sometimes comes to pass that evil doers, too, are happy. For God merely stated that He also shows Himself kind to those who do not deserve it, but without further assigning the why and the wherefore. But the reward to the pious, too, was only in part revealed to him, for he beheld the joys of Paradise of which they were to partake, but not the real reward that is to follow the feast in Paradise; for truly "eye hath not seen, beside the Lord, what He hath prepared for him that waiteth for Him."
Moses Asks God Why the Righteous Suffer
Legends of the Jews 2:118