Pesach | Birkat HaShir (2), by Rav Yitzchak Etshalom

Why is "Nishmat Kol Chai" the appropriate hymn with which to finish Leil haSeder? 

As we discussed in the previous shiur, the liturgical poem "Nishmat Kol Chai" is quite ancient and predates the era of the פייטנים. It is mentioned by R. Yochanan as the "Birkat haShir" which is to accompany the fourth (or fifth?) cup at the Seder. After reviewing some of the Halakhic considerations regarding its recitation - including a quick survey of the main approaches among the ראשונים regarding what is said over the fourth cup and if there is a fifth cup, we turn to the text itself and analyze it, line by line, seeing its development from a hymn about personal thanksgiving to a national-historic song of praise to an eschatological vision of universal acknowledgement of God's glory. I then suggest why this was an appropriate poem to be added to the Seder and, from there, to be instituted as the culmination of Psukei d'Zimra - what Chazal referred to as "the daily Hallel" (הלל שבכל יום).

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