Merciful God, who didst call thy servant Macrina to reveal in her life and her teaching the riches of thy grace and truth: Mercifully grant that we, following her example, may seek after thy wisdom and live according to her way; through Jesus Christ our Savior, who liveth and reigneth with thee and the Holy Spirit, one God, for ever and ever.
I thought Macrina the Elder was the grandmother of the Macrina the younger we celebrate this day, who was elder sister to bishops Basil, Gregory, and Peter.