Vayeira - in The Liturgy

In The Liturgy

The Passover Haggadah, in the concluding nirtzah section of the Seder, in a reference to Abraham’s visitors in Genesis 18:1, recounts how God knocked on Abraham’s door at the heat of the day on Passover and Abraham fed his visitors matzah cakes, deducing the season from the report in Genesis 19:3 that Lot fed his visitors matzah. The Haggadah recounts that Abraham ran to the herd. And the Haggadah continues that it was thus on Passover that the Sodomites were consumed by God’s fire, as reported in Genesis 19:24–25.

Also in the nirtzah section of the seder, in a reference to Genesis 20:3 or 20:6, the Haggadah recounts how God judged the King of Gerar Abimelech in the middle of the night.

The Rabbis understood Abraham’s devotion to God in the binding of Isaac in Genesis 22:1–19 to have earned God’s mercy for Abraham’s descendents when they are in need. The 16th century Safed Rabbi Eliezer Azikri drew on this rabbinic understanding to call for God to show mercy for Abraham’s descendents, “the son of Your beloved” (ben ohavach), in his kabbalistic poem Yedid Nefesh (“Soul’s Beloved”), which many congregations chant just before the Kabbalat Shabbat prayer service.

And many Jews, following Kabbalistic masters from the Zohar to Arizal, recite Genesis 22:1–19, the binding of Isaac, after the morning blessings (Birkat HaShachar). The recitation of Abraham’s and Isaac’s willingness to put God above life itself is meant to invoke God’s mercy, to inspire worshipers to greater love of God, and to bring atonement to the penitent.