

Learn how Spirit-led passion can fuel an authenticity that transforms individuals and congregations

Inside these pages, you will discover:- Spirit-Led Growth: How to move away from programs and invite the Holy Spirit as the primary agent for change.
- The Power of the Layperson: Why enkindled “ordinary” people are the drivers of church revitalization.
- Authenticity Over Programs: How personal passion fuels a genuine connection that others can feel.
- Freedom in Witnessing: Practical ways to shift from obligation-based outreach to a natural, self-driven mission.Whether you are a church leader or someone in the pews, Enkindle explores the essential role of the Holy Spirit in fueling a revival that shifts church culture from maintaining an institution to becoming a grassroots hub of innovation.
Books

Evangelism for the Contemporary Church
“This book should be required reading by every pastor.” –Gayle Chandler, Author of Embrace the Pain and Affirming You
“This book offers an authentic and openhanded expression of the truth we have experienced, and a deep faith in the work of the Holy Spirit to do the evangelizing.”
--M. Craig Barnes, President Emeritus, Princeton Theological SeminaryA few excerpts from Freestyle:
“From a freestyle perspective, the best kind of evangelism is authentic. In a world where it can be hard to figure out what’s real and what’s fake, people are hungering for authenticity.”
“Self-discovery is not a term that you often hear in evangelism but it is a central theme in freestyle evangelism.”
“When individuals freestyle, they are authors of their evangelism….Freestyle is an individualized, custom-made platform designed by the individual to release Jesus.”
“Jesus ignites fire in people. The Holy Spirit is the oxygen for the fire. And individuals’ passion is the fuel in freestyle evangelism.”Available in paperback, hardcover, EBook, and Audible Barnes & Noble Link
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A Companion Book to Freestyle: Evangelism as Expressing Jesus
This Bible study journal is the practical tool to:
• increase our understanding of discipleship and witness
• reflect and meditate on Scripture
• gain more confidence on the topic of evangelism
• understand the Holy Spirit’s ministry in outreach efforts
• get deeper into the meaning of freestyle evangelism
With room for note-taking, The Freestyle Bible Study Journal stimulates reflection on major themes of freestyle evangelism. Whether as part of an individual’s devotion, Sunday school curriculum, Bible study group, or discussion starter, this book is a valuable study aid in the understanding of the Holy Spirit’s participation in leadership and evangelistic empowerment.
Enkindle the Heart: A Devotional
We often talk about being led by the Spirit, but we rarely discuss the Holy Spirit’s work of enkindling a renewed spiritual hunger—one that shatters the routine of checking off religious boxes as we go through the motions. Yet, this Spirit-initiated spark is exactly what prevents our walk with Christ from turning into an unfulfilling ritual. When the Holy Spirit ignites our affections, this holy fire burns away our masks of performance and propels us to engage the world with raw authenticity.
This devotional is the personal companion to Enkindle: Reviving the Church from Within (2026). While that book focuses on bringing spiritual renewal to congregations, this guide is designed for the dynamic work inside of you.
An ignited heart is essential to a vibrant faith. Enkindle the Heart invites you on a transformative 65-day journey to enliven your soul. Through a collection of daily readings, focused meditations, and intimate prayers—each centered on the powerful imagery of flame, fire, and light—you will be inspired by the Holy Spirit’s burning passion. With each lesson, meditate on the passage, drawing out the deeper meaning to heighten your spiritual sensitivity.
To guide you, this devotional is structured around four distinct pillars:Biblical References:Grounding your thoughts in the Scriptures.Hymns and Spiritual Songs: Connecting your spirit to the praises of the faithful.Prayers: Opening an intimate, honest dialogue with the Lord.Classical and Influential Writings: Drawing wisdom from Christians who walked before us.
Whether you are seeking to kindle a flickering faith or light a blazing passion, this journey will illuminate your path. Lean into the warmth, embrace the clarity, and allow your spirit to be filled with a fresh, holy purpose.
Grassroot Perspectives on Causes, Culture, and Responses
The cultural landscape plays a momentous role in the transmission of Christianity. Consequently, the global expansion of the church has led to the increasing diversification of world Christianity. As a result, scholars are turning more and more to native cultures as the point of focus. This study examines how this new discourse evolved as well as presenting a missional methodology based on the study of the native landscapes of Korea. Kale Yu argues that the process of formulating and communicating Christianity was less consistent than is usually supposed. By immersing the reader in the thought and lived experience of various Korean contexts, Professor Yu recreates the diversity of cultural landscapes experienced by Korean Christians of different periods in history. The result is a new interpretation of cross-cultural missional interactions.

Chapter in an Edited Volume, The Practice of Mission in Global Methodism
This book brings together Methodist scholars and reflective practitioners from around the world to consider how emerging practices of mission and evangelism shape contemporary theologies of mission.
Engaging contemporary issues including migration, nationalism, climate change, postcolonial contexts, and the growth of the Methodist church in the Global South, this book examines multiple forms of mission, including evangelism, education, health, and ministries of compassion. A global group of contributors discusses mission as no longer primarily a Western activity but an enterprise of the entire church throughout the world.
This volume will be of interest to researchers studying missiology, evangelism, global Christianity, and Methodism and to students of Methodism and mission.
Articles
"Make Do With Less: A Grassroots Approach to Church Transformation," United Methodist Insight (May 29, 2025).
"Revisiting Lamin Sanneh’s ‘Western Guilt Complex’,” International Bulletin of Missionary Research 45:3 (May 2022), 397-404.
“‘Noxious Weed’: Persecution in the Development of Korean Christianity,” International Review of Mission 106:2 (December 2017), 400-422.
“‘The Women, the Mothers Mould the Nations’: The Christian Home, Korean Women, and WFMS Missionaries,” Methodist History 65:1,2 (October 2016 and January 2017), 47-60.
“Christian Model Minority: Racial and Ethnic Formation in Asian American Evangelicalism,” Journal of Religion, Race, and Ethnicity 7:4 (November 2016).
“Korea’s Confucian Culture of Learning as Gateway to Christianity: Protestant Missionsin Late Nineteenth and Early Twentieth Centuries,” Studies in World Christianity 22:1 (April 2016), 37-56.“American Missionaries and the Korean Independence Movement in the Early Twentieth Century.” International Journal of Korean Studies 15:2 (Fall 2011), 171-187.
“Hawaiian Connectionalism: Methodist missionaries, Hawaii Mission and Korean Ethnic Churches.” Methodist History 50:1 (October 2011), 3-15.
Media (TV, Podcasts)
"Morning Break with Rob Patz," Abundant TV (May 20, 2026).
"Future of Church," 95 Podcast With Dale Sellers (Forthcoming, June 23, 2026).
"Buckley Report," FOX8 (December 22, 2025).
"Understanding Korean Christianity," World Christianity Podcast (April 30, 2021).
Speaking
To invite Kale to speak at your event or service, fill the boxes below.
In the message, please mention dates, kind of event, and location.
Awards
Drew University: Florence Ellen Bell Scholar Award
Yale Divinity School: David M. Stowe Fund for Mission Research Award
Wheaton College: Study of American Evangelicals (ISAE), Diversity of American Evangelicalism Grant
Columbia University: Library Research Award
Calvin College: Summer Fellow, “The NextGeneration: World Christianity, Immigration, and the Transmission of Faith"
Duke Divinity School: Summer Wesley Seminar
Harvard-Yenching Library Grant
United Methodist History Research Grant
Nyack College: Special Recognition Award, College of Arts and Sciences
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