Read the daily quote from Pope Francis




This Church is our heavenly Father's house, a place of solace and grace, so feel at home. Enter reverently, pray quietly, sing joyfully, listen attentively, give cheerfully, and come back gladly. We are a welcoming Catholic Community called by God to live out the message of Christ in love and service to all people. If you are new to our Community, WELCOME!

St. Denis Catholic Community
2151 S. Diamond Bar Blvd.,
Diamond Bar, CA 91765

For our schedule for Masses, Confessions, Eucharistic Adoration, Holy Hours, and hours for the Blessed Sacrament Chapel, please click here.

Pastoral Office is open
    9:00 a.m. to 5:00 p.m.
    every day, except Tuesdays and holidays

Phone:  (909) 861-7106
Fax:  (909) 861-2697




Lenten Series:  “7 Deadly Sins and 7 Lively Virtues”

Fr. Dennis will lead this Lenten series on the first four Wednesdays in March from 7:30 p.m.-8:15 p.m.  He will reflect on and discuss each of the deadly sins and the corresponding lively virtues, which offer antidotes to the sins and lead us on the right path to healing and happiness. 

The schedule is as follows:

March 3           Introduction; pride
March 10         Envy, anger
March 17         Sloth, gluttony
March 24         Greed, lust

To join Fr. Dennis, please click on the following Zoom link shortly before 7:30 p.m. on the above Wednesdays: (The same link is used for every Wednesday night Zoom meeting.) 



Lent at St. Denis

St. Denis Now, Episode 9: Lent at St. Denis


Fridays evenings during Lent

6:30 p.m.  Stations of the Cross (also livestreamed)
7:00 p.m.  Mass (also livestreamed)
7:45 p.m.  Holy Hour (also livestreamed)

Stations of Cross, Mass, and Holy Hour, Friday at 6:30 PM (3/5/21)
Stations of the Cross Worship Aid
Holy Hour Worship Aid


Catholic Relief Services’
Operation Rice Bowl

Through CRS Rice Bowl, families learn about how our sisters and brothers around the world overcome hardships such as hunger and malnutrition, and how through Lenten alms, we have the power to make the world a better place for all.  Your donations help to provide lifesaving support to more than 159 million people in more than 100 countries. 

What does your donation provide?

  • $40 helps purchase infant scales to measures babies’ growth
  • $80 helps raise chickens to provide eggs for protein and income
  • $120 contributes toward a household garden for family nutrition

Seventy-five percent of donations will be used to help overcome hunger and malnutrition abroad; and 25% of donations will stay in the Los Angeles Archdiocese for hunger and poverty alleviation efforts.

For more information, please click here.  To donate, please click here


Tents for the Homeless

Many homeless people live on the streets and have no shelter.  Our goal is to distribute at least 50 three-person tents to homeless people who are living on the streets.  Each tent costs $35. 

To donate financially, please put your donation in an envelope, write “Tents for the Homeless” on the envelope or in the notation section of your check, and drop off the envelope in one of the locked collection boxes in the courtyard or in the mail slot for the Pastoral Office.  You also can mail in your donation to:  St. Denis Church, 2151 S. Diamond Bar Boulevard, Diamond Bar, CA 91765.

Alternatively, you can drop off new or used (but clean) three-person tents at the Pastoral Office or with one of our custodians.

All donations are requested by Friday, April 2 (Good Friday).

For more information, please contact Amy Siacunco at (909) 973-3194 or Tony Shatola at (909) 525- 8771.

Thank you for your support!  


Reflections by Fr. Dennis
on the daily Mass readings

Each day, Fr. Dennis offers a written reflection on the daily Mass readings.  The latest reflection is found here; and past reflections are found here.

Daily Gospel reflections
with Bishop Robert Barron

Receive in your E-mail inbox each morning a short Gospel reflection by Bishop Robert Barron for each day of Lent.  To learn more and to sign up for free, please click here.

“Best Lent of Your Life” with Matthew Kelly

Receive in your E-mail inbox each morning during Lent a short, inspirational video by Matthew Kelly.  Then, you can reflect on the video and apply what you learned to start living a more prayerful life.  

Matthew Kelly is an internationally acclaimed speaker, business consultant, and author of best-selling books.  He also is the founder of The Dynamic Catholic Institute, a Cincinnati-based nonprofit organization, whose mission is to re-energize the Catholic Church in America by developing world-class resources that inspire people to rediscover the genius of Catholicism.

To learn more and to sign up for free, please click here.


Fasting & Abstinence

Fasting and abstinence are two ways that we repent for our sins.  We fast and abstain on Ash Wednesday and Good Friday; and we abstain on the Fridays of Lent.

Fasting applies to people from age 18 through age 59.  When fasting, a person is permitted one full meal as well as two smaller meals, which together do not equal a full meal.  Liquids are allowed at any time. 

Abstinence applies to people who are at least 14 years old.  Abstinence means abstaining from meat (including beef, chicken, and pork), although seafood is permitted.

In all cases, common sense should prevail.  Thus, the following people are excused from fasting and abstinence:  the physically or mentally ill, including individuals suffering from chronic illnesses such as diabetes; and pregnant or nursing women.

“Five Reasons to Fast This Lent:  In Our Need for Food, We Discover Our Need for Christ” by Emily Stimpson Chapman from the National Catholic Register.




Monday through Thursday:  8:00 a.m. (also livestreamed)
                                         6:30 p.m.

Friday:             8:00 a.m. (also livestreamed)
                       7:00 p.m. followed by a Holy Hour (also livestreamed)

Saturday:         8:00 a.m. (also livestreamed)
                       5:30 p.m. (Sunday vigil with cantor, organ/piano)

Sunday:           7:00 a.m. (no music)
                       9:00 a.m. (cantor, organ/piano)
                       11:00 a.m. (cantor, organ/piano; also livestreamed) 
                       1:00 p.m. (cantor, piano)
                       5:30 p.m. (contemporary music with cantors, piano; also livestreamed)

                       Sunday Mass Worship Aid with Readings (3/7/21)

Our livestreamed Masses and Holy Hours are livestreamed simultaneously to our YouTube channel and our Facebook page.  

"Permission to podcast/stream the music in these services is obtained from ONE LICENSE with license #A730717. All rights reserved.”

No one is obliged to attend Mass on Sundays or Holy Days of Obligation because Archbishop José Gomez has indefinitely dispensed everyone in the Archdiocese of Los Angeles from this obligation for the duration of the pandemic.

COVID-19 Reminders

Seating inside the church and in the courtyard:

Seating in the courtyard is available for all Masses; and limited seating inside the church is available for most Masses.  All Masses from Monday through Saturday are celebrated in the church with seating inside the church and in the courtyard.  In addition, the 11:00 a.m. and 5:30 p.m. Sunday Masses are livestreamed from the church with seating inside the church and in the courtyard.  The other Sunday Masses (at 7:00 a.m., 9:00 a.m., and 1:00 p.m.) normally are celebrated in the courtyard with seating only in the courtyard.  However, during inclement weather (e.g., if it's too cold, too rainy, or too windy), we plan to celebrate these Masses in the church with seating inside the church and in the courtyard.

No reservations or tickets are needed to sit in the church or the courtyard.  All seating is on a first-come, first-serve basis.  Because seating inside the church is limited, latecomers (particularly on Sundays) may have to sit in the courtyard.

Strict social distancing

Strict social distancing is required in the courtyard and inside the church.  Specifically, people must wear a face covering and maintain social distancing at all times (i.e., at least six feet of separation between people from different households, although people from the same household may sit together). 

The chairs in the courtyard are spaced at least six feet apart; and the available pews in the church are also at least six feet apart.  The chairs and the available pews are cleaned after every Mass.

Inside the church, people should sit only in the available pews, not in the pews that are blocked off by tape.  Because the available pews are at least six feet apart, ideally each household will sit in its own pew.  If two households share a pew, there should be at least two empty seats (i.e., at six feet) between the two households.

Sitting in the courtyard

Tents in the courtyard provide shade and protection for about 80% of the chairs.  Those sitting in the courtyard may want to wear a sunhat, sunglasses, and sunblock and bring an umbrella and a water bottle.  For cold days, we recommend wearing a coat, gloves, a scarf, and hat.  People may also bring their own chairs or seat cushions.

Confessions in the courtyard:

Monday through Saturday:  After the 8:00 a.m. Mass 
Friday:             5:00-6:00 p.m.
Saturday:         3:00-4:30 p.m. 

You may schedule confession with a priest at another time by calling the Pastoral Office (909-861-7106).

Blessed Sacrament Chapel hours: 

Monday through Thursday:    8:30-9:30 a.m.
                                           4:15-6:15 p.m. 
Friday:             4:15-6:15 p.m.
Saturday:         8:30-9:30 a.m.

Enter the chapel through the open door that faces the church’s lower parking lot.  People need to maintain strict social distancing of at least six feet and wear face coverings.  Seating is limited to nine people. 

Holy Hour and Eucharistic Exposition and Adoration in the church
(with seating inside the church and in the courtyard) 

Friday:             8:30-9:30 a.m.  Eucharistic Exposition and Adoration
                       7:45-8:45 p.m.  Holy Hour (Holy Hour Worship Aid (3/5/21))



Links for Livestreamed Masses and Holy Hours

The livestreamed videos below are from our St. Denis YouTube Channel.  If you would like to watch more videos on our YouTube Channel, please click here.    

If you would like to watch our videos on Facebook, please click here


Upcoming Mass(es):

Mass, Monday at 8:00 AM (3/8/21)


Recent Daily Mass:

Mass, Saturday Vigil at 5:30 PM (3/6/21)
Worship Aid


Mass, Saturday at 8:00 AM (3/6/21)


Recent Sunday Masses:

Mass, Sunday at 11:00 AM (3/7/21)
Worship Aid


Mass, Sunday at 5:30 PM (3/7/21)
Worship Aid


Videos of all of our liturgies that were livestreamed or recorded from March 27 onward are available on St. Denis’s YouTube channel.



Vatican:  COVID-19 vaccines are “morally acceptable”

Archdiocese of Los Angeles:  “Strongly encourages” Catholics
to receive a safe and effective COVID-19 vaccine

The Vatican’s doctrinal office, the Congregation for the Doctrine of the Faith (CDF), has determined that it is “morally acceptable” for Catholics to receive the vaccines against the COVID-19 virus.  This judgment is deeply rooted in the Catholic moral tradition.

On December 21, 2020, the CDF stated:

All vaccinations recognized as clinically safe and effective can be used in good conscience with the certain knowledge that the use of such vaccines does not constitute formal cooperation with the abortion from which the cells used in production of the vaccines derive . . . the morality of vaccination depends not only on the duty to protect one's own health, but also on the duty to pursue the common good.

In the absence of other means to stop or even prevent the epidemic, the common good may recommend vaccination, especially to protect the weakest and most exposed.

Therefore, the Archdiocese of Los Angeles strongly encourages Catholics to receive a safe and effective COVID-19 vaccine for the sake of ourselves, our loved ones, and the common good.

If some of the faithful do not receive the vaccine, the Vatican says that those persons “must do their utmost to avoid . . . becoming vehicles for the transmission of the infectious agent.”

For more information, please see the following documents from the U.S. Conference of Catholic Bishops (USCCB):

USCCB – U.S. Bishop Chairmen for Pro-Life and Doctrine

USCCB – Moral Considerations Regarding the New COVID 19 Vaccines

USCCB – Answers to Key Ethical Questions About COVID 19 Vaccines

USCCB – Moral Guidance on Vaccine



2020 Tax Statements

To obtain a 2020 year-end tax statement for your financial donations to St. Denis, please submit a request to Therese Martinez at, or leave a message for her by calling the Pastoral Office at (909) 861-7106. 

Please include the following information with your request:

  • Full name
  • Mailing address
  • Telephone number
  • E-mail address
  • Envelope number 

In addition, please indicate whether you would like the tax statement E-mailed or mailed to you, or if you would like to pick it up from the Pastoral Office. 

Please allow two weeks for processing. 

Thank you for supporting St. Denis with your prayers and financial donations.




Religious Education
(children in preschool through grade 8)
Information and Registration


Teen Confirmation


Adult Faith Formation for Everyone
(including adults preparing for Confirmation)
Information and Registration




Click here for past St. Denis events




Reflections from
Fr. Dennis

(Previous Reflections)





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