Julie  WingfieldDirector of Celebration Arts 

Julie (Wingfield) Zierenberg

Julie has been GBC's Director of Worship Arts since December of 2011.

She has been leading worship for over 20 years in a variety of church settings as well as women's ministries events. In addition, she and her husband (Pastor Dave) have worked as professional musicians for many years, playing at bluegrass festivals, fairs and other venues throughout the southwest. 

From 2005 to 2012 Julie taught the String Orchestra and Guitar programs at the Academy for Academic Excellence (AAE), part of the acclaimed Lewis Center for Educational Research in Apple Valley, CA.

Contact Julie at

Directors of Student Ministries

Randy & Jana Jordan

Grace Bible Church is excited to have Randy and Jana Jordan as our Directors of Student Ministries!

The Jordans share a lifelong passion for investing in the lives of young people. 

After graduation from Pepperdine University Randy earned his teaching credential and began teaching junior high, eventually ending up at Hook Jr. High in Victorville.

After Jana graduated from Azusa Pacific University she travelled to India and worked with victims of human trafficking and with disabled children. 

Now their dreams have converged: to raise their own family and fulfill their common passion of working with young people. 

Under the Jordans' leadership, our Student Ministries will meet on Sundays during the 10:30 service at Grace Bible Church and at 6:30 on Tuesday evenings, also at the church.

You can e-mail the Jordans at


Office Manager 

Olene Mendoza

Olene Mendoza

Olene joined Grace Bible Church in 2010. She started as a volunteer in the office for two years, answering phones, filing, and helping with Vacation Bible School, among other things. In 2013 she became the office manager.

Olene is a single mother of four children: a daughter and three sons, the eldest of whom are twins. Olene became a Christian after she went through a very difficult situation. She was in the middle of trying to get her life back on track when she was diagnosed with an auto-immune disease called RA. Within two months' time she was in a wheelchair, depressed and in terrible pain. She reached a point in her life where doing it alone was not working out. So she called out to a higher power and was eventually led to GBC, where she became a Christian.

She has grown to serve not only as our office manager but also to lead our Hospitality Team, to volunteer on the Tech Team, and to participate in the Worship Team.

What are your favorite foods?
Sushi, tacos, and rocky road ice cream.
What are your favorite hobbies or activities?

Riding a bike, cooking, and reading books.
What is your favorite worship song?

"Lord, I Need You".
Where would you go on your dream vacation?

Scotland! I want to visit the castles.
What are your favorite movies?

"Steel Magnolias", "The Goonies" and the Harry Potter series.

Contact Olene at


Director of Children's Ministries

Amalia Hernandez

Amalia's relationship with Christ began while helping with the food & clothes ministry at Water of Life Church in Fontana, which served 300 people twice a week. It was there she dedicated her life to Christ.

Amalia met and married her loving husband Frank while living in the Rancho Cucamonga area and they moved to the High Desert in 2009. Frank also loves serving at Grace Bible Church! 

Amalia first volunteered in the nursery at GBC. This led to volunteering as a Sunday School teacher, which is where she found her passion. She has been a member of GBC since 2011 and joined us as the Director of Children's Ministries in 2012.

Amalia has a daughter, a son, and 3 grandchildren. She also enjoys her dogs, Chocolate & Chico.

Her favorite song is "Breathe" by Michael W. Smith.

Contact Amalia at


Director of Technical Ministries

Randy Lee

Randy became a Christian at age 10 while attending a summer camp. His lifelong passion has been music and music technology, which has led to an involvement in the music industry on many levels: touring, songwriting, manufacturing, technical writing, and sound design. He also has made a (new) lifelong study of Christian apologetics, and credits "Mere Christianity" by C.S. Lewis as one of the key ingredients in helping him to appreciate the unshakable, foundational truths of Christianity.

Randy has been married to Nancy since 1986 and they have two adult children. They also have four cats and a "sometimes dog". Randy has way too many electronic keyboards.

Contact Randy at




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