who enlightened your holy Church
through the inspired witness of your evangelist Saint Mark:
grant that we, being firmly grounded
in the truth of the gospel,
may be faithful to its teaching both in word and deed;
through Jesus Christ your Son our Lord,
who is alive and reigns with you,
in the unity of the Holy Spirit,
one God, now and for ever.
Proverbs 15.28-end or Acts 15.35-end
2 Timothy 4.1-11
Isaiah 62.6-10 or Ecclesiasticus 51.13-end
Acts 12.25 – 13.13
Psalms 37.23-41, 148
Common of Apostles and Evangelists (here).