Below are selections from the series of hymns by St. Romanos the Melodist titled On the Mission of the Apostles.
The Leader gathered together the lambs whom fear had scattered at the time of the crucifixion after the resurrection, and standing on the mountain top, He sang a sweet song, giving courage to the flock, a bit as though speaking with hints for timid men, He said: "Be of good courage, I alone have conquered the world, I alone have scattered the wolves, no one was with Me; I was the one, the only one, Who alone knows what is in the heart."
I send forth one word for all so that I may not weary you in teaching you one by one. Once and for all I say to My saints: Go forth into all the world; teach races and kingdoms; for all things have been given Me by My Father, things on earth and in heaven over which I was in charge before I assumed flesh. And now I have become King of all, and I have you as my sacred senate. I Who alone know what is in the heart.
"Save the world on these terms, baptizing them in the name of the Father, and the Son, and the Holy Spirit." Strengthened by these words, the Apostles said to the Creator: "Thou art God before all time and without end. We shall herald Thee as one Lord, along with the Father and the Holy Spirit, just as Thou hast commanded, O Thou Who alone knows what is in the heart."