Cyril of Alexandria
Catena Aurea · Lukasevangelium 9
And it came to pass, as he was alone praying, his disciples were with him: and he asked them, saying, Whom say the people that I am? They answering said, John the Baptist; but some say, Elias; and others say, that one of the old prophets is risen again. He said unto them, But whom say ye that I am? Peter answering said, The Christ of God. And he straitly charged them, and commanded them to tell no man that thing; Saying, The Son of man must suffer many things, and be rejected of the elders and Chief Priests and Scribes, and be slain, and be raised the third day.
It was the duty then of the disciples to preach Him throughout the world. For this was the work of those who were chosen by Him to the office of the Apostleship. But as holy Scripture bears witness, There is a time for every thing. For it was fitting that the cross and resurrection should be accomplished, and then should follow the preaching of the Apostles; as it is spoken, saying, The Son of man must needs suffer many things.