Liturgy zu Bereschit 17:5

Fulfill the promise to Jacob and the kindness to the children of Abraham,²⁷“אַב הַמוׄנִי“ Abraham is called “אַב הַמוׄן גוׄיִם“ (Gen. 17, 5) “a father of a multitude of nations. for as a result of Your love for us You called us “My firstborn son.” Make white our sins that are red as the red thread.²⁸The red thread that was tied to the goat that was sent to Azazel on Yom Kippur which miraculously turned white as a sign that our sins were forgiven (v. Lev. chap. 16). Let my prayer to You, Adonoy be a time of acceptance. God, in Your abundant kindness respond to me with true [salvation].

and the kindness to the children of Abraham,²⁷“אַב הַמוׄנִי“ Abraham is called “אַב הַמוׄן גוׄיִם“ (Gen. 17, 5) “a father of a multitude of nations.