Inviting Angels to the Seder
Rabbi Yitzchak Schwartz
The Zohar states the when one fulfills the mitzvah of telling the story of Yezitas Mitzraim with joy and happiness will merit to rejoice with the Shechina in the world to come. When one tells the story with joy and happiness Hashem convenes His holy celestial beings and tells them to witness us telling the story and the praises of the Haggada.
Upon observing our rejoicing in telling the story of the miracles that Hashem did for us when He took us out of Egypt, Hashem's celestial beings praise Him for His wonders and miracles and acknowledge the sanctity of Hashem's holy nation, the Jewish people, that rejoice together with Him as they tell the story of the Haggada. When this happens the strength of the shechinah is increased. Just as the dominion and glory of a human king is strengthened when his subjects hear of his powers and praises and awe falls upon his servants.
Similarly, when we praise Hashem for the wonders and miracles of Yitzias Mitzraim our words ascend to the inner sanctums of Hashems's heavenly cadre who are in-turn energized by our words of rejoicful praise.
On the night of the Seder we should be mindful of the fact that there are listeners that we cannot see that hear and observe all that we say and feel. These holy creatures, malachim, are responsible for carrying out all of Hashem's decrees in this world. They are energized by our testimony and praise of Hashem on this very special night. We are then credited with the greatest of all mitzvohs – the unification of Hashem's holy name in this world and above.