Saint Mark the Evangelist
O ALMIGHTY God, who hast instructed thy holy Church with the heavenly doctrine of thy Evangelist Saint Mark; Give us grace that, being not like children carried away with every blast of vain doctrine, we may be established in the truth of thy holy Gospel; through Jesus Christ our Lord. Amen.
Ephesians iv. 7. St. John xv. 1.
Homily - Chrysostom Tractacts on the Gospel
Abide in Me
IN HOC SIGNO VINCES - TIME DEUM ET OPERARE IUSTITIAM