Indeed, however, the careful observer will notice that not only the remembrance of the Exodus from Egypt stands at the center of Passover and the Seder night, but also the gratitude and praise for it. Learn from the text that the Sages established to conclude the reading of the Haggadah: "Therefore, we are obligated to thank, praise, laud, glorify, exalt, honor, bless, elevate, and acclaim the One who performed all these miracles for our forefathers and us, bringing us from slavery to freedom, from sorrow to joy, from mourning to festivity, from darkness to great light, and from subjugation to redemption, and let us say before Him a new song: Hallelujah." And from these words, we begin saying the Hallel, "Hallelujah, praise the servants of the Lord, etc." – From this, we learn that the story of the Exodus in the Haggadah is not just for its own sake, that is, for fulfilling the commandment of recounting the Exodus and remembering it, but it has another purpose: to lead to gratitude. Through the story, we come to recognize the greatness of the Almighty's kindness, and from this recognition, the desire to thank Him for these kindnesses arises. Therefore, we conclude with the words "Therefore, we are obligated to thank," meaning, because such and such happened to us in Egypt, and such and such were the kindnesses of the Almighty with us in redeeming us from there, as we elaborated in our story, therefore we are obligated to thank and praise Him with all kinds of expressions of praise and gratitude, and to recite the Hallel before Him.

Indeed, the very obligation of reciting the complete Hallel on the first night of Passover proves this, for concerning the source of this obligation we find in the Jerusalem Talmud (Pesachim, Chapter 9, Halacha 3) the following: Rabbi Yochanan said in the name of Rabbi Shimon ben Yehotzadak, it is written (Isaiah 30:29), "The song will be for you as on the night of the sanctified festival" – the night of Passover teaches about the downfall of Sennacherib, and it is learned from it: just as this requires Hallel, so does that require Hallel. This shows us that Hallel is about 'song,' meaning gratitude.

However, this seemingly requires explanation: how did the obligation of gratitude come to be added to the first night of Passover, standing as an essential and central purpose, equal and equivalent to the original primary purpose of recounting and remembering the Exodus from Egypt? And although the importance of gratitude itself needs no elaboration, its incorporation and establishment as a primary obligation, equal to the obligation of recounting, seemingly requires explanation.