"Reclining upon the bosom of Christ the Teacher..."

St. John the Theologian reclining upon the bosom of Christ at the Mystical Supper (source)

  
Reclining upon the bosom of Christ the Teacher at the supper, O beloved Disciple, from the Lord there you came to know things ineffable, and you thundered to all with a voice from heaven: In the beginning was the Word, and the Word was with God, and the Word was God, the true light that illumines every man who comes into the world, Christ God, and the Savior of our souls.
-Doxastikon of the Litia by Byzantius.

(source)

Through the prayers of our Holy Fathers, Lord Jesus Christ our God, have mercy on us and save us! Amen!