Meet Our Masters

Grandmaster Charles W. Coker
9th DAn

Yeshá Ministries was founded on June 13th, 1983, at Neptune Baptist Church by Charles W. Coker. Dr. Coker is a 9th Degree Grandmaster who holds Taekwondo Dan grade certifications from the Korean Ji Do Kwan Association, USA Taekwondo Association, World Ko Am Mu Do Federation, and Kukkiwon.

He began his martial arts training in 1967 under Senior Master Bill Beach. In addition to Taekwondo, Grandmaster Coker also holds Dan grade rankings by the World Hapkido Federation, American JuJitsu Federation, and Ving Tsun Kung Fu. He competed while in the United States Marines during his active duty days (1968 until 1975). He continued competing until 1983 when he retired ranked 2nd (in his division) internationally by Black Belt Magazine.

Since his retirement and the closing of their commercial schools, he and his brother Grandmaster James R. Coker, focused their attention on using Olympic Taekwondo as a tool for ministry as well as personal development for those not able to afford Olympic training. Yeshá is designed to be an outreach of the local church and serve as a community development organization with Christ at the center of the program.

Dr. Coker is the CEO of LifeThrive Performance Systems, Inc., which is an Organizational Development Company specializing in the use of Human Data to improve performance and productivity. He has offices in both the US and Europe. He has been married to Tracy for 32 years and is the father of 9 children, three of which are also Olympic-certified Black Belts.

Master Kevin Thomas, 6th Dan

Kevin Thomas is 6th Dan Black Belt Master Instructor and a member of the Board of Directors with Yeshá Ministries.  He manages the testing, special events, and public relations, plus he edits the quarterly newsletter.  Kevin joined Yeshá Ministries in 2004 as a 1st Dan, following years of studying Taekwondo.

Kevin started his martial arts career in college after wrestling for six years.  He’s participated on the Yeshá Ministries Demonstration and Competition Teams.  He won gold, silver, and bronze medals for sparring and forms at the 2011 and 2014 AAU National Championships.  Prior to joining Yeshá, Kevin was certified in Krav Mega.  He enjoys sharing his knowledge and experiences with others so they may grow in this sport and life and faith.

Kevin works as the Director of Retirement Benefit Services for FIS.  He and his wife enjoy traveling, outdoor activities, cars, and motorcycles.  He also serves the community as a Team Leader at his church, an Assistant Chair for The Players Championship, Director of Field of Dreams Baseball for special needs children, and Board Member for the Pop Warner Junior Jaguar Bowl.

Master Ron Jenkins, 5th Dan

Ron Jenkins is a 5th Dan Master Instructor with Yeshá Ministries.  Ron began his martial arts training in 1974, and he has a black belt in Judo and id s St. Kyu in Shito Ryu Karate. 

After Karate, Ron began his training in Taekwondo and continued off and on (due to school closings) for more years than he can remember.  Ron opened his first school in Greenville, South Carolina, in 2011.

Ron's best friend and fellow Brother in Christ is Grand Master Coker. They have been friends for over 52 years!

Ron is retired and enjoys... well almost everything!  Ron and his wife Manette enjoy traveling, target shooting, and hanging around their "children" (3 Labs and a Huskie).

Master Mark Sadusky, 6th Dan

Mark Sadusky is 6th Dan Black Belt Master Instructor. He is currently responsible for overseeing two of our Yeshá schools and is an active member of the Master's meetings that assist and guide our instructors and students. Master Sadusky joined Yeshá Ministires after watching his youngest daughter test for her yellow belt. They both went on to receive their Black Belts in 2001.

He competed in the NE Florida Sport Karate Tournament in 2001, taking 2nd in sparring, however his true love is for breaking. After receiving his 4th Dan Black Belt, he traveled to all of the Yeshá schools teaching breaking and was instrumental in writing the required breaks in the Student manual. Master Sadusky was a six times undefeated Yeshá Breaking Champion and in 2002 at the ISKA US Open World Championship, he placed 5th in the World for Power Breaking.

Master Sadusky is a motorcycle enthusiast, enjoys photography,  bungee jumping, sky diving, and scuba diving. He enjoys his family life and feels blessed in all the opportunities that he has been afforded.

Master Steve Ritchey, 5th Dan

Master Steve Ritchey is the founder and lead instructor of Yesha’s Switzerland school. He works as a manager at Intuition LLC, with previous experience at Harte Hanks and AT&T U-Verse. He also worked as a commercial insurance agent for 20 years.

Steve served four years in the US Air Force from 1977 to 1981 and obtained a degree in computer technology from National College of Business in Rapid City, SD.


Steve has been involved in Yeshá Ministries for approximately 20 years. He teaches Taekwondo as a way of sharing the gospel with the community and is passionate about sharing the love of Christ. In his spare time, Master Ritchey enjoys skiing, spending time with his family, and serving on the leadership team of Switzerland Community Church.

Master LARRY WANG, 5th Dan

Master Morgan WANG, 4th Dan

Master Wang is the Instructor for Mandarin East.

Master Kyle Scott, 4th Dan

Master Scott is the Lead Instructor for Oakleaf.

Master Buck Kaplan, 4th Dan

Master Kaplan is the Lead Instructor for Atlantic Beach.