If the nature of man were all we had, then surely the outlook would be dim. But we also have the aid of God, the commandment, the mitzvah. The central Biblical fact is Sinai, the covenant, the word of God. Sinai was superimposed on the failure of Adam. The fact that we were given the knowledge of His will is a sign of some ability to cope with evil. The voice is more than a challenge. It is powerful enough to shake the wilderness of the soul, to strip the ego bare, to flash forth His will like fire.
Abraham Heschel on the problem of evil