Faculty & Staff

Aaron Miller

Director of Development

Annika Miller

Admissions Counselor
Annika spent most of her growing up years in Central Virginia. Prior to attending RBC, she received her Associates of Applied Science in Business Administration from the local community college and helped her parents start and run a discount store in her hometown. She graduated from RBC in 2022 and began her job as an Admissions Counselor the following October. Outside of work, you can find Annika helping with her church's youth group, hiking, kayaking, catching up with friends over coffee, watering her many plants, making sourdough, or exploring her new home area. Annika has a passion for discipling the next generation and loves interacting with the students and watching them grow as they seek to follow Jesus well.

Bethany Peachey

Administrative Assistant
Bethany was born in Pennsylvania, but her family moved to Oklahoma when she was 9. After high school she attended RBC and earned an associate of arts in biblical studies. From 2002-2005, she worked in Red Lake, Ontario for Impact North Ministries. Then she returned to RBC as the Academic Assistant and Registrar during which time she completed a bachelor's degree through Ohio Christian University. In 2017, she married Rich, and two years later transitioned to a part-time position doing administrative work. She and Rich enjoy hosting guests at their home, hiking the Ohio state parks, leading a life group and assisting with worship at their church, and interacting with their student discipleship group at RBC. They love being involved with an organization that cares deeply about advancing God's Kingdom.
Darnel Brenneman.

Darnell Brenneman

Operations Manager
Darnell is originally from Grantsville, Maryland. He is married to Bekah and together they homeschool their four boys. In his free time, he enjoys his own house projects, campfires, and good food! Darnell enjoys supporting the mission of RBC by maintaining facilities and connecting with students.

Dave Troyer

Maintenance Staff
Dave serves on our maintenance team and works extra hard to make sure the campus landscape looks sharp. He and his wife, Carol, often sneak away for a few weeks in the winter to enjoy the sunshine of Florida. Dave has spent years as an auctioneer and often helps out for auction fundraisers. He loves the atmosphere and getting to relate to the people on campus.

Esther Martin

Admissions Counselor

Heather Maust

Registrar; Academic Assistant; Office Manager
Heather grew up on a quiet farm in western Pennsylvania with four siblings. After graduating from RBC she began working full-time in her current position. When she's not working, she enjoys teaching her ballet class, painting, finding new things to bake, or spending time with friends (which usually involves coffee). She loves when the school year is in session and students are on campus. "I'm a people person, and I love getting to know each year's student body."

Ivan Wagler

Maintenance Staff
Ivan joined us on the maintenance team after retiring from driving truck for Holmes Lumber in Plain City, OH. He works alongside his wife Loretta. They have 2 daughters, 4 grandchildren, and one great-grandchild. Ivan enjoys traveling, camping, and checking things off his to-do list!

Jeremy Miller

B.A., B.S. Sterling College; M.A. Malone University
Jeremy and his wife Sarah are originally from the plains of Kansas and have been blessed with four children. They spent nearly 12 years in northeastern Ohio where he pastored Mennonite Christian Assembly. They love Christ and His body and have been called to equip those in the Kingdom of God for more effective service to the King. They cut firewood, enjoy their Burnese Mountain Dog, and love helping with the Kansas wheat harvest in the summer. Jeremy was once a student at Rosedale then went on to get his Bachelor's from Sterling College and Master's from Malone University. Jeremy loves getting to know students and watching God’s Spirit transform their lives. Additionally, it's hard for him to imagine a better group of people to work with. "The camaraderie of staff and faculty is rich and rewarding and our students benefit from a unified group of people who enjoy each other."

Jessica Gingerich

Visual Communication Specialist
Jessica grew up in a small town in northern Indiana. In 2021, she graduated from Liberty University with a bachelor’s in graphic design. She and her husband, Dwylin, married in 2022 and moved to Rosedale soon after. When not designing projects for Rosedale Bible College, she enjoys traveling to new places, spending time with friends, trying new recipes, and reading. Jessica is excited to be a part of the staff at RBC and appreciates the way everyone works together towards the common goal of training Kingdom workers.

Jessica Miller

Explore & Bridge Program Co-director
Jessica was born as a missionary kid in Indonesia and grew up as a pastor’s kid in Illinois. She entered into a personal relationship with Jesus at a young age and grew and matured in her faith especially after her family moved to Idaho where her dad continued in pastoral ministry. She graduated with a BS in Biblical Studies and Women’s Ministries at Multnomah Bible College. She worked for a number of years in social service work in Idaho while also completing a Master’s degree online in Christian counseling. She was involved in a number of different volunteer ministries in the Pacific Northwest and then spent two years serving the Lord in full-time ministry in Central Asia. She continues to have a special heart for that region of the world and enjoys being able to invest in relationships with international students. She married Jeff Miller in 2015 and feels privileged to serve the Lord together with him. They spent six years in pastoral ministry together in Indiana and began serving at Rosedale Bible College in the fall of 2022. They had a daughter, Joy, in 2023 who keeps Jessica extra busy. Jessica enjoys interacting with RBC students - hearing about their lives, what they are learning in their classes, and about their experiences with Explore.

Jewel Showalter

Development & Communications
Jewel was married to Richard Showalter for 51 years. He passed away in 2019, and she began work at RBC in 2020. They have three adult children, all married, and 14 grandchildren. Since their marriage in 1968, Richard and Jewel worked on the staff of Eastern Mennonite University, as the founding pastoral couple at Mechanicsburg Christian Fellowship, as English teachers, as international workers, as Global Consultants with Rosedale International and on the staff of Eastern Mennonite Missions. Jewel enjoys the camaraderie of work with other staff and faculty as well as interactions with students. Jewel highlighted, "Working here gives me the opportunity to maintain connections with the broader Mennonite world."

Ken Miller

Faculty; Financial Aid Director
B.M.E. Ohio State University; M.S. Ohio State University
Course(s): Worship Leadership; Worship in the Christian Tradition; College Algebra; Intro to Humanities; Rosedale Chorale; Intro to Music Theory & Sight Singing; Class Voice; Choral Conducting
Ken is our math and music expert. He received a Bachelor's in Music Education and Master's in Mathematics, both from Ohio State University. He is married to Jenny, and they have four adult children and a growing number of grandchildren. Outside of the classroom, Ken enjoys disc golf, chocolate, learning to play piano, and taking care of his chickens. As a math teacher, Ken loves the moments when the light comes on for students as he is explaining a difficult topic.

Loretta Wagler

Loretta helps keep campus looking great, and is always willing to jump in and help! She works alongside her husband, Ivan. They have 2 daughters, 4 grandchildren, and one great-grandchild. Loretta enjoys reading, baking, gardening, and interacting with everyone at RBC!

Lynford Schrock

Chief Financial Officer; Information Technology
Lynford grew up in central Illinois. After a year at Rosedale as a student, he returned to Illinois to earn a degree in Accounting. He became a Certified Public Accountant in 1986, spent two years in voluntary service in Northwest Ontario, and worked in public accounting for over three years. In 1993, he moved to Rosedale to accept the role of Accountant. Over the years, his roles at Rosedale Bible College have expanded in various areas, including Information Technology. He and his wife, Darlene, have five children. After seeing hundreds of students come through RBC, it is fun to see our own children begin to join their ranks! Lynford's role includes many tasks behind the scenes. "While my role is frequently less visible than some, I know that it is part of the greater mission of building the Kingdom of God by helping to prepare Kingdom workers.

Matthew Showalter

Academic Dean; Faculty
Diploma, Rosedale Bible College; B.A. Eastern Mennonite University; M.A. Asbury Theological Seminary
Course(s): Biblical Literature I, II, III; Spiritual Formation; Old Testament Prophets
Matt grew up as a missionary kid in the Middle East. In 1997, he married Colleen and they now have 5 children. Together they have served in a church planting role in the Middle East and in youth ministry. He taught High School Bible for 5 years before accepting an invitation to join the faculty at RBC. Today, Matt helps pastor at Agape Community Fellowship in Hilliard. Matt loves the community that develops on campus each year. "The discussions, prayer, encouragement, debates, growth and support that grow out of the shared desire to follow Jesus are what I look forward to the most as I teach here at RBC."

Phil Weber

Diploma, Rosedale Bible College; B.A. Cedarville University; graduate studies, Asbury Theological Seminary; M.A. University of Mobile
Course(s): Principles of Biblical Interpretation; Genesis; Romans; History of Christianity I
With brief exceptions, Phil has been employed by non-profit missions or educational institutions since graduating from high school. A few sources for illustrations from his life include growing up in the South, doing prison ministry, farming, serving on church leadership teams, being the youngest member of a large family, and being a husband to Twila, father and grandfather. Phil's favorite moments as a teacher come when he sees the light of new understanding dawn on the face of a student, or when a student asks a question that shows deep insight or engagement with the Scripture.

Reuben Sairs

Faculty; Director of Library Services; TiM Instructor
B.S. Pennsylvania State University; M.A. University of Mobile; M.L.I.S. Kent State University
Course(s): Introduction to World Religions; Introduction to Philosophy; Christian Apologetics; Anabaptism Today; Public Speaking; The Gospel of John; Introduction to the Biblical Languages; Bible Survey (TiM)
Reuben does not come from the Christianized subculture--his upbringing and its environment were secular. Although he's been in the Mennonite world for a long time, his formative years as a Christian were spent in other groups. That said, he is committed and tries to nurture an Anabaptist approach to faith. Before he went into ministry, the focus of his energies was in rock and folk music, where he had modest success and many great experiences. He is married to Vicki, and they have three grown sons. Reuben is currently on the pastoral team at London Christian Fellowship. Reuben loves teaching and believes strongly in education as a necessary part of growth in Christ. "It is the power of the classroom--the timeless human encounter of students who want to know and teachers who know the way to get them started that excites me most. Higher education is especially exciting because students are now at a stage when they have to process, sometimes disagree, analyze and learn to articulate ideas that drive the adult world. Even when it is messy, it can be wonderful, especially as you see a faith grow from childishness to maturity."

Rick Griest

Director of Business & Leadership; Faculty
B.S & MBA: Franklin University in Organizational Leadership, Registered Corporate Coach through Worldwide Associate of Business Coaches (WABC)
Course(s): Business and the Kingdom of God; Principles of Marketing; Leadership, Communication & Ethics
Rick worked in retail management for 10 years before starting a career with Honda of America Manufacturing. He Retired after 30 years of service. While there, he held various roles including working the assembly line, serving on staff support groups, and in Training and Development at the Department, Plant, and Corporate Levels. Rick has been married to Candy for 30 years, and they have two daughters. His hobbies include reading, playing golf and working out. Rick is passionate about discipleship and serving at Rosedale Bible College as the Director of Business & Leadership. He is excited to be involved in developing the curriculum, teaching, and networking with businesses and churches.

Shelly Spires

Dietary Supervisor
Sierra Coblentz.

Sierra Eicher

Executive Assistant
Sierra grew up in Plain City Ohio, only about 15 minutes away from Rosedale. She graduated from RBC in 2021 and participated in the Bridge program during the 21-22 school year. Using her passion for music, she enjoyed performing with RBC's Salt & Light Co. and Chorale. In her free time, Sierra loves to travel, play games, and eat food with friends. Sierra is excited to work alongside her former professors and to continue to get to know students in the upcoming years!

Twila Weber

Financial Aid Coordinator; Events Coordinator; Women's Mentor
Twila's father is one of the founding fathers of RBC and his involvement was the reason they moved from Michigan to Ohio when she was a child. She's been married 42 years to her husband, Phil, who is a faculty member at RBC. They have three married children and four grandchildren. She loves spending time with her family, taking walks with friends, trying new recipes, playing board games and reading biographies. Twila's favorite parts about working at RBC is helping students get aid so they can come to to college, interacting with students and watching them mature in their faith, and being part of the RBC community.

Not sure who to contact? 

Admissions and Programs: admissions@rosedale.edu

Financial Aid: tweber@rosedale.edu

Donations and Alumni Relations: aaronmiller@rosedale.edu

Facility Rental: info@rosedale.edu


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