Chapter 92 of Tehillim conveys the message that the circumstances we observe at the present do not tell the whole story. Repentance is effective because as long as we are alive, our “story” is still being written.

The Midrash (Bereishit Rabba, 22:13) relates that after Kayin’s exchange with God following his murder of Hevel, he met his father, Adam. Adam inquired about Kayin’s sentence for killing his brother, and Kayin replied that he was forgiven and granted a reprieve. Adam then exclaimed with frustration, “Such is the power of repentance – and I was not aware!” The Midrash concludes that Adam immediately proceeded to compose a hymn which was later incorporated into Tehillim – the Psalm of “Mizmor shir le-yom ha-Shabbat” (Tehillim 92).

This account gives rise to several questions, including the question of how this chapter of Tehillim relates to teshuva. The chapter of “Mizmor shir le-yom ha-Shabbat” speaks of the need to thank and praise God even during dark times, when evil people prosper. Ultimately, the Psalmist promises, evil will be defeated and the righteous will blossom and flourish, and it will then become clear to one and all that God is just and gives all people what they deserve. Why would Adam compose this text in response to discovering the power of teshuva?

This chapter of Tehillim conveys the message that the circumstances we observe at the present do not tell the whole story. The story is still being written, and thus we cannot reach definitive conclusions based on the events we currently witness. When we see wicked people flourish, the Psalmist tells us, we must remember that “le-hishamdam adei ad” – they will ultimately be eradicated, and their success is only temporary. The fact that they enjoy prosperity now does not mean that this will always be the case; indeed, the end will be far different from the present.

The Midrash perhaps teaches us that this is true of teshuva, as well. The reason why repentance is effective is because as long as we are alive, our “story” is still being written. Through repentance, we have the capacity to determine that our missteps were just bumps along the road, or necessary detours which somehow helped us reach our desired destination. As in the case with the prosperity of the wicked, our misdeeds do not necessarily reflect the final outcome. If we capitalize on healthy feelings of regret and shame, and learn from our mistakes rather than despair because of them, then we can become better and nobler people, and thereby end our story on a more positive note. Psalm 91, then, is an appropriate and powerful reaction to the great gift of teshuva, as it expresses the need to recognize that until the final chapter is written, situations can be changed and a positive outcome can be achieved.