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The Team


Nathan Kistler

Executive Director

At just 33 years of age, Nathan, along with his beautiful wife Amber, are the executive directors of Hope To The Hill in Washington DC. Nathan has had the honor of singing and sharing the stage with Christian music's finest artists.  Names like Bill and Gloria Gaither, The Nelons, Guy Penrod, Ernie haase, Dino and so many more over the years.  He has traveled around the world singing about the glorious Gospel of Christ.  Singing from the steps of the US Capital to the southern steps of Jerusalem, Nathan has shared his vocals with many thousands of people. With 49 states and 24 countries to his credit, as well as the X-Factor stage in LA, Nathan loves sharing in music and in word with others.  Nathan has built relationships in Washington that have grown into incredibly fruitful opportunities to share the Gospel of Jesus.  


Dr. George Roller


George Roller received his B.A. in English from the University of Illinois and his Master’s and Doctor of Jurisprudence degrees from the University of Miami.  He taught English for 35 years, serving as English Department Chairman for many of those years.  He was awarded the Outstanding Teacher of the Year for Miami’s Region IV.  As an attorney, he practiced law in the Miami area for 25 years—concurrently with his teaching career.  An elder in his church, he served as Missions Chairman for two years and led three missions trips to Ukraine.  He was also a candidate for Lieutenant Governor of Florida.  George was involved with Evangelism Explosion for over 38 years—as a trainer and as an clinic instructor.  In 2003, George assumed a leadership position at the D. James Kennedy CENTER FOR CHRISTIAN STATESMANSHIP in Washington, DC where he served as a missionary to the Members of the United States Congress for 12 years as Executive Director and for 2 years as the ministry’s Ambassador.  After having retired from CCS, George took a two month sabbatical to write a book and has now returned to his missionary work on Capitol Hill as Ambassador for Hope To The Hill and as Ambassador for its parent ministry Hope Ministries International.  George has been married to Linda for nearly 45 years, and they have five children and twelve grandchildren.


Dr. Dave Kistler

Chairman of the Board

President of Hope Ministries International/

Evangelist/Chairman of Hope To The Hill Board 

Evangelist Dave Kistler was born into a pastor's home and came to Christ at the age of 5. During his teenage years, he began preparing for a legal profession. However, at the age of 16, he sensed the overwhelming call of God to preach the gospel. Following his college and seminary training (during which he obtained an undergraduate degree in Bible and Graduate degrees in Pastoral Studies and Divinity-including Biblical Languages), Dave joined the staff of a large church in Florida, leading a youth group of 125 teens. After two years in youth ministry, he yielded to full-time evangelistic ministry.

For over 30 years, Dave, his wife Betsy and children (Rachael, Nathan
and Hannah) have traveled the world proclaiming the gospel and the word of God. Included in his ministry is an evangelistic outreach to major cities via a 2000 seat tent. Since 2001, Dave has conducted three crusades in Washington, DC, and two in the Pentagon. As a result of those evangelistic endeavors, he has started an ongoing ministry to elected officials in the nation's capital called "HOPE To The Hill." Evangelist Kistler's ministry (HOPE Ministries International) has ministered in England, France, Belgium, Scotland, Wales, Canada, Mexico, the West Indies and Africa, as well as in almost every state in the nation! 

Paul Isaacs

Congressional Missionary

As a leader, team chaplain, coach, entrepreneur, and mentor, Paul Isaacs speaks to thousands of people every year about what it means to be a Kingdom Citizen in the culture in which we live and work. After graduation from college, Paul worked at The Heritage Foundation in Washington D.C. Eight years later, after starting his family and ministry, he earned a Masters Degree in Counseling from The University of Dayton. Paul was asked to run for State Senate in Ohio in 2011, nearly unseating the incumbent. The Navigators, a world-wide missions organization, tabbed Paul to serve on the National Collegiate Leadership Team in Colorado Springs, CO. However, his passion for the issue of life caused him to leave a 17-year career in campus ministry to launch a start-up called Save the Storks, a budding movement which became a national brand known for helping at-risk women and children. He served Save the Storks as President for five years.

Paul is a practitioner, not a theoretician. Paul’s character and leadership have been forged by his own experiences, his terminal illness as a young man, his journey with God, his passion for history, his love for poetry, and his love of books and stories. As a speaker, Paul draws from these experiences and resources to interact with audiences, not just moving crowds to laughter and tears, but also inspiring them to take bold action.

Since 2020, God has used Paul in the arena of civic engagement and mobilization, calling on people to pray, think, engage, and vote from a Biblical world view. From the halls of academia to the halls of Congress and into the marketplace of business, Paul’s passion to live like Jesus has never changed.


Roger Roseberry

Congressional Military Liason Missionary

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