Timeline of the Mass c. 30 – The Last Supper c. 54 – Saint Paul writes his first letter to the Corinthians, in which he discusses “the Lord’s supper” and records the words of institution c. 65‐95 – The four Gospels and the Acts of the Apostles are written down c. 70‐100 – A book of Christian rituals is written down, containing the earliest ritual Eucharistic prayers c. 100‐150 – The rituals book is edited together with other writings to create the Didache (“The Teachings of the Twelve Apostles”), a document cited by many Church Fathers c. 155 – Saint Justin Martyr writes his First Apologia to emperor Antoninus Pius, in which he describes Sunday liturgy (said in Greek at this time) c. 190‐200 – Pope Saint Victor I allegedly the first to celebrate the Mass in Latin at Rome c. 215 – The Anaphora of Hippolytus (the basis for the current Eucharistic Prayer II) is composed c. 3rd century – The Angelic Hymn (“Doxa en hypsistois”) is added to the Mass 325 – First Council of Nicaea: The Creed is formed, defining the relationship of the Father and the Son c. 345 – The Anaphora of Saint Basil (the basis for the current Eucharistic Prayer IV) achieves its final form c. 360 – Saint Hilary of Poitiers first translates the Angelic Hymn into Latin (“Gloria in excelsis”) 381 – First Council of Constantinople: The Creed is expanded to define the role of the Holy Spirit and to include the final sentence regarding the Church, baptism and the resurrection 382 – Saint Jerome commissioned to create the official Latin translation of the Old and New Testaments c. 415 – By this time, the entire Mass (except the Kyrie) is said in Latin at Rome c. 425‐440 – The Sanctus (“Holy Holy Holy”) is added to the Preface of the Roman Canon (Eucharistic Prayer I) c. 590‐600 – Pope Saint Gregory I revises the Mass and its plainchant music 692 – Pope Saint Sergius I adds the Agnus Dei (“Lamb of God”) litany to the Mass, sung at the Breaking of the Bread c. 800 – Charlemagne mandates use of the Roman Rite of the Mass throughout his domains 1014 – The Creed is an accepted part of the Mass, recited after the Gospel c. 1100 – By this time, the Didache has been lost 1545‐63 – Council of Trent: in the wake of the Protestant Reformation, a commission is established to revise and standardize the Roman Rite, removing excessive innovations and anything not at least 200 years old 1570 – Pope Saint Pius V publishes the standardized Roman Rite, mandating it throughout the Church as the Ordinary Form wherever an existing liturgy is not at least 200 years old 1873 – A copy of the Didache is discovered in a library in Istanbul 1962‐1965 – Second Council of the Vatican: a commission is established to revise and simplify the Roman Rite, removing duplications and restoring elements that had been lost to time 1970 – Blessed Pope Paul VI publishes the revised, simplified Roman Rite, mandating it as the new Ordinary Form; the Mass of Pius V (“Tridentine” Mass) is kept as an Extraordinary Form of the Mass The Didache, Chapter 14: But every Lord's day gather yourselves together, and break bread, and give thanksgiving after having confessed your transgressions, that your sacrifice may be pure. But let no one who is at odds with his fellow come together with you, until they be reconciled, that your sacrifice may not be profaned. Outline of Justin Martyr’s Sunday Liturgy (155): ‐ Gathering ‐ Reading from the “Memoirs of the Apostles” (the Gospels) or from the Prophets ‐ Sermon by the presider based on the readings ‐ Prayer for the needs of the Church community ‐ Offering of bread, wine and water ‐ Prayer of thanksgiving, and Amen ‐ Distribution of the blessed gifts ‐ Collection for the needy Form of the Mass of Pius V (1570): ‐ Mass of the Catechumens ‐ Mass of the Faithful o Prayers at the Foot of the Altar o Offering of bread and wine (includes a Penitential Rite) o Incensing o Introit (Entrance Chant), Kyrie o Prayer to the Trinity and Gloria o Preface, Sanctus, Roman Canon o Collect (Opening Prayer) and Amen o Epistle, Gradual, Alleluia/Tract, o The Lord’s Prayer Gospel o Breaking of the Bread o Homily o Sign of Peace o Recitation/Singing of the Creed o Distribution of Communion o Post‐communion prayers and chants o Dismissal o Reading of “the Last Gospel” (John 1:1‐14) Form of the Mass of Paul VI (1970): ‐ Introductory Rite ‐ Liturgy of the Eucharist o Greeting o Offering of bread and wine o Penitential Rite, with Kyrie o Preface, Sanctus, Eucharistic o Gloria Prayer (with acclamation), and o Collect Amen ‐ Liturgy of the Word o The Lord’s Prayer o First reading, Psalm, Second o Sign of Peace reading, Acclamation, Gospel o Breaking of the Bread o Homily o Distribution of Communion o Recitation of the Creed o Post‐communion Prayer o Prayers of the Faithful ‐ Concluding Rite o Blessing o Dismissal .