Saturday, 9 a.m.-5 p.m.: The Friday Morning Music Club, led by Paul Leavitt, hosts interested singers in a workshop of works by Bach, Haydn, Gounod, Brahms, Rachmaninoff, Thompson, Lauridsen and Leavitt, then leads them in a concert at 4 p.m. Those wishing to be a part of the workshop and concert should contact Peter Baum, e-mail: . First Baptist Church, 16th and O streets NW. Free. 202-333-2075.

Saturday-Sunday, 10 a.m.: “Cathedral Creche Exhibition: What Child is This?” an annual display of Nativity scenes from around the world. Washington National Cathedral, lower-level crypt outside Bethlehem Chapel, Wisconsin and Massachusetts avenues NW. Free. 202-537-6200 or .

Saturdays, 12:30 p.m.: Weekly carillon recital by Edward M. Nassor. Washington National Cathedral, Bishop’s Garden area, Wisconsin and Massachusetts avenues NW. Free. 202-537-6200 or .

Saturday, 4-6 p.m.: A community spaghetti supper will be served. The dinner includes spaghetti, bread, salad, a beverage and dessert. Children are welcome. Christ Episcopal Church, 8710 Old Branch Ave., Clinton. Free-will offering, $10 suggested. 301-868-1330 or .

Saturday, 7-9 p.m.: HBO’s “Gideon’s Army,” the personal stories of three young public defenders in Georgia who challenge the assumptions that drive the U.S. criminal justice system. A discussion follows. River Road Unitarian Universalist Congregation, 6301 River Rd., Bethesda. Free. 301-229-0400. .

Saturday, 8 p.m.: “Brave New World: Music of the Tempest.” A program that explores and celebrates the musical interpretations of Shakespeare’s “The Tempest” and includes Matthew Locke’s 1674 incidental music for orchestra and voices, and beguiling piece for soprano, baritone, and Renaissance instruments by American composer James Primosch. Rosa Lamoreaux, William Sharp and Tempesta di Mare perform. Co-sponsored with the Folger Shakespeare Library. Washington National Cathedral, Wisconsin and Massachusetts avenues NW. $30-$50. 202-544-4600 or .

Sunday, 10:20 a.m.: Coffee, conversation and controversy features speaker Jill Stewart, founder and president of Families Against Mandatory Minimums. River Road Unitarian Universalist Congregation, Fireside Room, 6301 River Rd., Bethesda. 301-229-0400.

Sunday, 2 p.m.: Rocknoceros will perform its award-winning music for families with young children. Grace Episcopal School, 3601 Russell Rd., Alexandria. $5 cover charge. 703-549-5067. .

Sunday, 5:15 p.m.: Classical pipe organist James Hicks performs works by Erik Alvin, Yngve Skold, Fredrik Sixten, Erlend von Koch and Askar Lindberg on the 10,650-pipe great organ. Washington National Cathedral, Great Choir, Wisconsin and Massachusetts avenues NW. Suggested donation, $10. 202-537-6200 or .

Sunday, 4 p.m.: Pianist Sang-Qing Lu-Bennaman will perform works by Schubert, Chopin and Liszt. Paint Branch Unitarian Universalist Church, 3215 Powder Mill Rd., Adelphi. Free, donations welcome. 301-937-3666 or .

Sunday, 4-6 p.m.: Cody & BJ will perform a special program for young music lovers. Concertgoers are asked to bring diapers and wipes for the D.C. Diaper Bank. Opened and unopened packages are acceptable. Washington Hebrew Congregation’s Julia Bindeman Suburban Center, 11810 Falls Rd., Potomac. Free, registration requested: 301-279-7505. .

Sunday, 4-6 p.m.: Madelle Duo’s violinist Rachelle Betancourt and cellist Madeleine Kabat will perform works by Mozart, Beethoven, Kodaly and Handel. St. Patrick’s Episcopal Church, 3241 Brush Dr., Falls Church. Suggested donation, $15. . 703-200-7489. .

Sunday, 6 p.m.: The African Children’s Choir, a part of Music for Life, will perform well-loved children’s songs, traditional spirituals and gospel favorites to benefit its programs in education, care and relief and development in Uganda, Kenya, Rwanda, Sudan, Nigeria, Ghana and South Africa. Northeastern Presbyterian Church, 2112 Varnum St. NE. Donations appreciated. 202-526-1730. .

Most weekdays, 10:30 a.m. and 1:30 p.m.: Behind-the-scenes cathedral tour, for ages 11 and older. See gargoyles and stained-glass windows; climb a lot of stairs to view the city from above. Washington National Cathedral, Wisconsin and Massachusetts avenues NW. $25; children, seniors, students and military, $21. 202-537-6200 or .

Most Mondays, 7 p.m.: Sally Jones leads “A Course in Miracles.” Davies Memorial Unitarian Universalist Church, 7400 Temple Hills Rd., Camp Springs. Free. 301-449-4308. .

Monday, 7 p.m.: Bible study. Wesley United Methodist Church, Fellowship Hall, 5312 Connecticut Ave NW. Free. 202-966-5144. .

Mondays, 7-8:30 p.m.: Food addicts support group. All are welcome. St. Columba’s Episcopal Church, Friendship Terrace Game Room, 4201 Albemarle St. NW. Free. 202-363-4119.

Tuesday, 10:45 a.m.:A docent leads a “spirituality reflections” tour that depicts stories of faithful action and devotion highlighted in the building’s glass and stone. The tours offer story, silence, poetry, prayer and reflective invitations, including one to attend Eucharist at noon. Participants will receive a pilgrimage medallion. The tours do not take place on holidays or during special events. Washington National Cathedral, Wisconsin and Massachusetts avenues NW. $15. 202-537-6200 or .

Tuesday, 12:10 p.m.: Ars Nova Chamber Orchestra performs works by Haydn, Beethoven and Janacek. Church of the Epiphany, 1317 G St. NW. Suggested donation, $10. 202-347-2635, Ext. 20.

Tuesday, 7 p.m.; Wednesday, noon: Bible study. Randall Memorial United Methodist Church, 1002 46th St. NE. 202-396-0375.

Wednesdays, 7 and 7:30 p.m.: Certified instructor Susan Goekler leads tai chi classes to strengthen mind and body. Intermediate students at 7 p.m.; beginners at 7:30 p.m. Davies Memorial Unitarian Universalist Church, 7400 Temple Hill Rd., Camp Springs. Suggested donation, $5 per class. or . 301-449-4308.

Wednesdays, 7 p.m.: New Covenant class, a 10-week series designed for adult seekers that gives an overview of the Episcopal Church’s worship, thought and practices. No class on Ash Wednesday, March 5. Historic Christ Church, Meade Room, 118 N. Washington St., Alexandria. Free. The Rev. Heather VanDeventer, . 703-549-1450.

Wednesday, 7 p.m.: Bible study at St. Timothy’s Episcopal Church, 3601 Alabama Ave. SE. 202-582-7740.

Wednesday, 7:30 p.m.: Bible study at Wesley United Methodist Church, 5312 Connecticut Ave. NW. 202-966-5144 or .

Thursday, 7:30 p.m.: Bible study at St. Augustine’s Episcopal Church, the library, 600 M St. SW. Free. 202-554-3222 or .

Friday, 7-9 p.m.: Bible study. Union Wesley AME Zion Church, 1860 Michigan Ave. NE. Free. 202-526-1244.

Friday, 7:30 p.m.: Lutheran Bishop Richard H. Graham will preach and the choir of the Lutheran Church of the Reformation, Capitol Hill, will sing at Evening Prayer for Christian Unity, inaugurating the 2014 Week of Prayer for Christian Unity. The Franciscan Monastery of the Holy Land, 1400 Quincy St. NE. 202-526-6800 Ext. 374, or .

Next Saturday, 9 a.m.: The Brotherhood of Shiloh Men will hold its annual Martin Luther King Jr. prayer breakfast. The guest speaker will be Rep. James E. Clyburn (S.C.), assistant Democratic Leader. Shiloh Baptist Church, 1510 Ninth St. NW. Donation, $25. 202-232-4288.

Next Saturday, 3 p.m.: Tess Taylor, author of "The Forage House," will discuss slave owner and slave descendants. Davies Memorial Unitarian Universalist Church, 7400 Temple Hill Rd., Camp Springs. Free. 301-449-4308.   

Next Saturday, 7:30 p.m.: Six Degree Singers, Silver Spring young professional choir, will perform inspirational choral masterpieces. Proceeds will benefit FACETS and its work on the hypothermia project. Everyone is invited to arrive early for a service project devoted to making fleece blankets. Unitarian Universalist Congregation of Fairfax, 2709 Hunter Mill Rd., Oakton. $15; students, free.

— Compiled by Gerri Marmer

Send event name, dates, times, exact address, prices and a publishable telephone number at least one week before our Saturday publication day to Religion Events, The Washington Post, 1150 15th St. NW, Washington, D.C. 20071; or e-mail