St. John Chrysostom (344/354 – 407) -Born in Antioch. Known as ‘golden-mouthed’ (Chrysostom) because of his ability as a speaker and preacher, he became Archbishop of Constantinople in AD 397. He was deposed in 404 for attempting to reform the higher clergy and for preaching against the luxury and depravity of the court of the Roman Emperor. He died in exile in 407. The principal Liturgy of the Eastern Orthodox Church is named in his honor; The Divine Liturgy of St. John Chrysostom.
“Brothers, be always occupied with the intellectual prayer and do not move far away from God until you receive God’s mercy and pity. Never ask for anything but for His infinite mercy and this is enough for your salvation. When asking for His mercy, cry aloud in entreaty with humble and contrite heart from morning to night and, if possible, during the whole night, saying unceasingly: Lord Jesus Christ, Son of God, have mercy on us.”
~ Saint John Chrysostom speaking on sobriety and prayer