O God, who with untold mercy were pleased to choose as an Apostle Saint Matthew, the tax collector, grant that, sustained by his example and intercession, we may merit to hold firm in following you. Through our Lord Jesus Christ, your Son, who lives and reigns with you in the unity of the Holy Spirit, one God, for ever and ever.
(Collect for September 21, Feast of Saint Matthew, Apostle and Evangelist)
Image: interior mosaic of Saint Matthew, Evangelist by Edwin H. Blashfield (Cathedral of St. Matthew the Apostle, Washington, DC)