Board of Reference


Dr. Bill Welte

President & CEO

America’s Keswick

Bill has been the President and CEO of America's Keswick, a christian conference and retreat center, and the Colony of Mercy, since 1997. He is a conference host, popular speaker, and the creator of "Freedom Fighters," a daily encouragement email for men. The Colony of Mercy is the oldest residential recovery program in the US, now in its 121st year. Prior to his ministry at America's Keswick, he served as Vice President of Ministries at Sandy Cove Conference Center. He also served as Director of Music in several churches in the Philadelphia area and managed Fox Chase Christian Bookstore for 15 years.  Bill has been married to his childhood sweetheart, Jan, for many years. They have four married children and a whole bunch of grandchildren.


Dr. Dave Ridder

Senior Pastor

Bayside Chapel

Dave Ridder earned a BA at Wheaton College and completed his MDiv and DMin at Trinity Evangelical Divinity School in Illinois. He has served churches in Michigan, Pennsylvania, and is currently Senior Pastor of Bayside Chapel in Barnegat, NJ. He also served as Vice President and Dean of Bethel Seminary in St. Paul, MN, and is on the board of a variety of ministries. He is married to his college sweetheart, Diane, and has married children and wonderful grandchildren.


Dr. Martha MacCullough

Professor Emeritus

Cairn University

Martha is the Distinguished Professor Emerita for Worldview Integration in the Center for University Studies at Cairn University. She is retired from full time teaching at the University. Formerly Dean of the School of Education, Dr. MacCullough specializes in learning theory and learning methodology, philosophy of education, and biblical worldview integration. She earned a Doctorate of Education degree from Temple University, a Master of Arts in Christian Education from Wheaton College, and a Bachelor of Science in Bible degree with an international specialization from Cairn University.


Elizabeth Givens

Missionary & Teacher

Cairn University Board Member

Elizabeth is a graduate of Cairn University and Temple University School of Communications, and she is passionate about integrating biblical truth into daily life. Early in her youth she worked at America's Keswick for two summers, which influenced her decision to follow the Lord in global ministry. She worked as a global writer and speaker with SEND International for 40 years. She and her husband have also directed a university teaching program in China for 14 years. They currently live in Canton, MI, leading teaching teams to Asia and lecturing on college campuses in the USA and China. The Givens have worked in more than 50 countries. Elizabeth is the mother of three adult daughters and the grandmother of five, all of whom continue to wander around the globe.

Sylane Mack--pic for Cyberspace.jpg

Sylane Mack

President, Principal Speaker, Lead Counselor, Author

Transformed By Grace, Inc.

Sylane holds a BA from State University of New York at Potsdam and an MS from California State University at Fullerton. Now a national and international speaker and author, Sylane began speaking in the mid-1970s, declaring the power of Jesus to heal and transform the most broken of lives by His love, Word and Spirit. From the darkness of horrendous abuse, God brought His light and power to forgive into Sylane’s life! In 2003 God birthed Transformed By Grace (TBG), a Counseling and Conference Speaking Ministry; in 2017 God established TBG’s Counseling and Wellness Center in Pennington, NJ. Sylane’s deepest desire, whether in the counseling room or the conference room, is to point others to the Lord Jesus and His power to preach good news to the poor, bind up the broken-hearted, set the captives free, bring the prisoners out of darkness…and plant them as oaks of righteousness…for the display of his splendor! (Isaiah 61:1-3).  Sylane married her high school love, Tim, and they have two daughters, two sons-in-love and, so far, one grandson.


Dr. Roger Willmore

Pastor, Speaker

Keswick Christian Life Convention

Dr. Roger Willmore served as a Southern Baptist pastor for more than forty-two years. He holds a Doctor of Ministry degree and has received two honorary doctorates. Roger served two terms as president of the Alabama Baptist State Convention. He was mentored for 35 years by the late Stephen F. Olford. Roger speaks at Keswick Christian Life Conventions around the world including America’s Keswick in Whiting, New Jersey.