Abraham's sacrifice of Isaac
From the Book of Divine Worship - The Proper: First Part - The Great Vigil of Easter - The Service of Lessons
Gen. 22:1-18 Ps. 33:12-22, or 16
Let us pray.
God and Father of all believers, for the glory of your Name multiply, by the grace of the Paschal sacrament, the number of your children; that your Church may rejoice to see fulfilled your promise to our father Abraham; through Jesus Christ our Lord. Amen.