This article was originally published in Homiletic and Pastoral Review (http://www.hprweb.com/2017/01/index-lectionum-scripture-usage-in-roman-catholic-masses-before-and-after-vatican-ii) on January 20, 2017. This version is slightly revised and reprinted by permission.
Matthew P Hazell & Dr. Peter A Kwasniewski (Foreword), Index Lectionum: A Comparative Table of Readings for the Ordinary and Extraordinary Forms of the Roman Rite, Volume I (Lectionary Study Press, 2016. See this article on NLM for ordering information.)
One unexpected and disquieting thing that becomes obvious when you take a close look at the tables in Index Lectionum, which compare the two sets of Mass readings, is how much Scripture was removed from the new Mass, even though the stated goal was to include more Scripture.
Let’s start with some of the history and stated motives behind the revisions to the Scriptures read in Masses during the liturgical year. Later on, this article gives an example of the consequences of one notable omission of verses that are doctrinally important: verses 27-32 of 1 Corinthians 11 no longer appear in the New Mass lectionary at any time during the year, even though these verses are essential for understanding why the Church prohibits Catholics in an illicit marriage from receiving Communion and why the doctrine should not be changed.
Before the council ended, and within a few months after Pope Paul VI’s election, the Constitution on the Sacred Liturgy, Sacrosanctum Concilium (SC), was released as the council’s first document. The readings used at Masses were changed based four sections of SC: 24, 35, 51, 92. The most frequently quoted section in support of this change is number 35. § 35: In the sacred rites, a more abundant, more varied, and more appropriate selection of readings from Sacred Scripture is to be restored.[3]
In 1964, Pope Paul VI established the Consilium ad exsequendam Constitutionem de Sacra Liturgia, the council for implementing the constitution on the liturgy. Part of the consilium’s assigned task was to create a new lectionary. [4]
The consilium expanded the lectionary from a single-year cycle to a three-year cycle for Sundays and a two-year cycle for weekdays. The Latin edition of the lectionary was published in 1969, the English edition for the USA in 1970; use of the revised lectionary[5] and the revised Roman Missal began on the First Sunday of Advent: November 30, 1970.
For Sundays and major feast days, each yearly cycle begins on the first Sunday of Advent (the last Sunday of November or first Sunday of December). In the new lectionary, the readings for each of the three years of the A, B, C cycle for Sundays are mostly taken from the Synoptic Gospels. Matthew’s Gospel was assigned to year A, Mark’s to year B, and Luke’s to year C.
• Year A: Gospel of Matthew (November 2013 through 2014)
• Year B: Gospel of Mark (December 2014 through 2015)
• Year C: Gospel of Luke (December 2015 through 2016)
Readings from the Gospel of John are assigned during Lent, Holy Week, and Eastertide during every year. (For more about the changes to which Johanine verses are used when, see an interesting discussion in Dr. Peter Kwasniewski’s Foreword to the Index Lectionum.)
For Sundays and feast days, a third reading was added before the Epistle and Gospel, which is taken from the Old Testament except during Eastertide, when the third readings is taken from the Acts of the Apostles. On ordinary weekdays, readings are taken from the remaining parts of the Bible.
For weekdays, odd-numbered years use the readings for Cycle I; even-numbered years are Cycle II.
A Responsorial Psalm [6] was also added between the Epistle and Gospel.
• The same readings are read each year on the Sundays and feast days.
• Most Masses had only two readings: the Epistle and the Gospel.
• Parts of the Old Testament were read only on a few feasts, vigils, ember days, and within some liturgical octaves.
• Most weekday Masses did not have their own assigned readings (Propers). On feast days, the readings were from the feast. Otherwise, the readings were usually from the prior Sunday.
• The biblical texts used for Sundays, vigils, and major feasts include about 22% of the NT Gospels, 11% of the NT Epistles, and only 0.8% of the OT (not counting the Psalms).
• A greater variety of readings is included in a three-year cycle for Sundays (A/B/C) and a two-year cycle (I/II) for weekdays.
• Three main readings are now prescribed for Sundays and major feasts: Reading 1, usually from OT books; Reading 2, from NT Epistles; Reading 3, from NT Gospels.
• The biblical texts used for Sundays, vigils, and major feasts now include about 58% of the NT Gospels, 25% of the NT Epistles, but still only 3.7% of the OT (not counting the Psalms).
• Including all the Masses for Sundays, weekdays, rituals, votives, the propers and commons of saints, and special needs and occasions, the Lectionary for Mass now covers much of the NT (about 90% of the Gospels, 55% of the rest: Acts, Epistles, Revelation), but still very little of the OT (slightly over 13%).
One commentator noted, “It is interesting to know that only 13.5% of the OT and 71.5% of the NT is read in the Ordinary Form. The ‘read the Bible in 3 years’ idea is a myth.”
Matthew Hazell is a convert to Catholicism from evangelical Protestantism who lives in Sheffield England. He is a scholar whose particular interest is in the Roman Catholic liturgical reform of the twentieth century. He maintains a blog about his projects and studies at “Lectionary Study Aids”, [8] which is a good resource for anyone interested in liturgical studies, and he is a contributor to the New Liturgical Movement website at http://newliturgicalmovement.org.
Hazell is preparing a second volume dealing with the Psalms. The planned second volume will include the entrance (introit), offertory, and postcommunion chants and antiphons, as well as the graduals, tracts, alleluias, and responsorial psalms in both forms of the Roman Rite.
Hazell mentioned in his Introduction that he hopes also to create another Index to compare the use of Scriptural and other readings in the Divine Office and Liturgy of the Hours.





