The Gemara states that Rabbah and Rabbi Zeira partook of a Purim meal together, and when Rabbah became intoxicated, he arose and slaughtered Rabbi Zeira. The following day Rabbah prayed and Rabbi Zeira was restored to life. The following year Rabbah invited Rabbi Zeira to partake again in the Purim meal, and Rabbi Zeira declined, stating that a miracle does not happen often. This episode has mystified many Torah scholars, as it is difficult to understand how one could reach the point of intoxication where he would actually kill his colleague. Furthermore, it is inconceivable that after having slaughtered his friend, Rabbah would dare invite him again to share a Purim meal together.
Perhaps we can answer these questions based on the words of the Arizal who said that Yom Kippur is Yom Kippurim, i.e.. Yom Kippur is merely a semblance of Purim. It is well-known that the Vilna Gaon explained this cryptic statement to mean that whereas the avodah on Yom Kippur is to fast, the challenge of Purim is to eat, drink and to be merry. Based on the words of the Arizal we we can suggest the following explanation of this episode. On Yom Kippur one is supposed to kill himself, i.e. abstain from eating and drinking and ascend to the heavens, akin to the ministering angels. On Purim, however, one is required to eat and drink and be emery, and in a sense, to partake of all the physical pleasures that this world has to offer. Yet, the goal of Purim is to reach a level of עד דלא ידע, where one does not know the difference between this world and the next world. Thus, Rabbah slaughtered Rabbi Zeira, i.e. he brought Rabbi Zeira to a level of repentance where he ascended upon high and was akin to the ministering angels. The next day Rabbah brought Rabbi Zeira back to life. Why did Rabbah wait until the next day?
There is an opinion in halacha that one should fast two days of Yom Kippur, due to the doubt referred to as sfeika deyoma, an uncertainty of which day is Yom Kippur. Rabbah assumed that Rabbi Zeira would maintain the level of Yom Kippur, until he was informed from on high that this was not so, so the next day, because Rabbi Zeira was in danger of maintaining such an exalted level, Rabbah brought Rabbi Zeira back to life. The following year, when Rabbah invited Rabbi Zeira to partake again in the Purim meal, Rabbi Zeira responded that a miracle does not happen often. Perhaps Rabbi Zeira was intimating that although the previous year he had experienced the Yom Kippur aspect of the day, he now wanted to experience the aspect of Purim, alive and down to earth.