Inspire · Equip · Mobilize

Discipleship

LeadCon 2026

LeadCon is a one-day conference designed to inspire, equip, and mobilize disciples through powerful speakers and curated breakout sessions. Attendees will gain practical tools to make a greater impact in their everyday mission field and lead others into deeper service in the Kingdom.

LeadCon is part of our church’s discipleship movement, created to equip and develop leaders who will advance the cause of Christ both locally and globally.

Saturday, August 8 | Check in at 8am | Event starts at 8:30am

Location: Rancho Campus
7576 Etiwanda Ave, Rancho Cucamonga, CA

Breakfast refreshments & lunch will be provided.

Please Note: There are no refunds. If you sign up and can no longer attend, your registration will be donated as a scholarship to a sponsored attendee.

Register Now

Keynote Speaker | Dr. Ryan Hartwig

Keynote Speaker | Dr. Ryan Hartwig

Dr. Ryan T. Hartwig is a respected scholar, author, and higher education leader with more than 25 years of experience equipping teams, organizations, and leaders to thrive. Known for his engaging and practical insight, he brings a unique blend of academic excellence and real-world leadership expertise.

Topic to be announced soon — we’re honored to welcome Dr. Hartwig and look forward to the insight and expertise he will bring!

Learn More About Dr. Hartwig

Leading from Acceptance, Not for Acceptance

Speaker: Sam Song, COO, City to City LA
Being Offered: Session 1 & 3
What does the Gospel make possible in your life, your home, and your calling? Too many leaders are building for approval — from their teams, their churches, their networks, even God. The result is leadership that is driven but depleted, busy but not free. This breakout is an invitation to something different. When the Gospel moves from theology to lived reality, it changes not just what you do — but why you do it. Leading from acceptance means you can take risks, tell the truth, and build something that actually lasts. We'll explore what it looks like to let the Gospel shape your life, your home, and your calling —and cast a vision for what it means to plant and lead a gospel expression from a place of freedom, not fear.

A Sabbath Way for Leaders: How to Lead for a Lifetime

Speaker: Dr. Mike Medieros, Leadership Development Pastor, Cornerstone Bible Church
Being Offered: Session 1 & 3
Leadership is deeply meaningful, but it can also quietly drain the soul when we spend our lives caring for others while neglecting our own mind, body, and spirit. In this practical and reflective session, Rev. Dr. Mike Medeiros will help leaders recognize the warning signs of burnout and rediscover God’s gift of Sabbath as an essential rhythm for a healthy life of leadership. Participants will be invited to honestly evaluate their current pace, renew their understanding of rest, and begin forming sustainable habits that allow them to lead others from a place of spiritual health, relational wholeness, and long-term faithfulness.

Fear and the Market Place:

How Our Genesis 3 Muscle Memory is Killing Our Kingdom Activity

Speaker: Dr. Jason Miller, Adjunct Professor, Biola University
Being Offered: Session 1 & 2
“Fear and the Marketplace” explores the “Genesis 3 muscle memory” that still shapes how we live, lead, and work. Since the fall, humanity has instinctively hidden behind fear, shame, and self-protection—separating the sacred from the ordinary. This instinct causes many to treat business as spiritually secondary, forgetting the priesthood of all believers. This session invites leaders out of hiding and into a fearless Kingdom imagination where work becomes worship, and leaders build with courage.

For the One: From Community to Commission

Speaker: Pastor Ron Aramburo, Pastor Leah Klingseis, O&A Discipleship/Community Team
Audience: Required for Community Group Leaders and YA Community Mentors/Co-Leads
Being Offered: Session 2 & 3
Community is not just where people gather—it is where disciples are formed, leaders are raised, and people are equipped to bring those far from God near. In this required breakout, Community Group Leaders and YA Community Mentors will receive the vision for For the One, our all-church curriculum designed to move people from knowing the gospel, to being shaped by the gospel, to living as witnesses for the one God is calling them to reach. Together, we will explore how every group can become part of ONE&ALL’s discipleship movement: leaders modeling a life worth following, disciples sharing Christ, and disciples making disciples.

Teams that Thrive: Collaborative Leadership for Disciple-Making Leaders

Speaker: Dr. Ryan T. Hartwig
Audience: By invitation only - ONE&ALL Staff and Ministry Leads
Being offered: Session 2
A disciple-making movement will only be as healthy as the teams entrusted to lead it. In this invitation-only breakout for ONE&ALL staff and ministry leads, Dr. Ryan Hartwig will help leaders examine the practices that allow ministry teams not just to function, but to thrive together with clarity, trust, shared purpose, and collaborative strength. Rooted in Teams That Thrive: Five Disciplines of Collaborative Church Leadership, this session will challenge leaders to build teams that embody the heart of LeadCon 2026: disciples who lead, leaders who disciple, and teams who multiply Christlike influence together.

Dr. Ryan Hartwig

Dr. Ryan T. Hartwig serves as Provost at Vanguard University, leading the academic vision, faculty excellence, and various programs. A respected scholar and higher education leader, he previously held executive roles at Colorado Christian and Azusa Pacific Universities, specializing in leadership and team development. With over 25 years of experience as a professor and leadership consultant, Dr. Hartwig is recognized for his work in collaborative leadership, resilient teams, and organizational health. He frequently consults with organizations, combining academic insight with practical expertise. He is the award-winning author of Teams That Thrive, Leading Small Groups That Thrive, and The Resilience Factor. Ryan journeys through life with his wife, Jill, and their four children: Halle, Alia, Katelyn, and Matthew.

Rev. Dr. Mike Medeiros

Rev. Dr. Mike Medeiros began his professional career in the Azusa Unified School District as an impactful mentor teacher, coach, and guidance counselor from 1986 to 2000. During that influential season, Mike and his wife, Sharon, also left to serve as dedicated missionaries with SIM in Cochabamba, Bolivia. Since 2001, he has served as the Pastor of Leadership Development at Cornerstone Bible Church in Glendora. In this role, he supervises staff, oversees global missions, leads the college ministry, and is the founder of the Cornerstone Leadership Institute. Mike is also a Senior Adjunct Professor in the Honors College at Azusa Pacific University. He is an executive coach and certified LEGO Serious Play Facilitator who travels nationally to help groups thrive. Mike and Sharon have been married 39 years, with four children and six grandchildren.

Dr. Jason Miller

Dr. Jason Miller is a theologian, leadership coach, organizational consultant, and longtime ministry leader who helps people examine how their beliefs shape their behaviors and results. With a PhD in Theological Leadership, more than 20 years of ministry experience, and over 12 years coaching leaders and organizations, Jason brings biblical depth, practical clarity, and a deeply pastoral heart to every room he leads. He has served as adjunct faculty at Talbot School of Theology and Biola University, coached leaders across church, nonprofit, business, and athletic contexts, and currently serves as Board Chair for Kids Alive International. Jason’s teaching invites leaders to move beyond fear, striving, and self-protection so they can live more freely and faithfully from their identity in Christ.

Sam Song

Sam Song is the Chief Operating Officer of City to City SoCal, focused on starting and strengthening gospel-centered churches across Southern California. Sam brings a practitioner's perspective to leadership — grounded in decades of real-world experience, with a deep conviction that the best leaders don't just solve problems; they design environments where people can flourish.

Sam returns this year after being a featured speaker at last year’s LeadCon, where his message about intergenerational relationships deeply encouraged and inspired attendees.

Ron Aramburo

ONE&ALL Lead Discipleship Pastor
Ron Aramburo serves as the Lead Discipleship Pastor at ONE&ALL, where he shapes discipleship strategy, develops leaders, and strengthens ministry culture. With more than 25 years of experience in pastoral ministry and leadership development, Ron brings a seasoned perspective to helping people and organizations lead with clarity, purpose, and impact. Known for bridging people-first care with operational excellence, Ron has led complex initiatives, facilitated high-impact training, and spoken at conferences on leadership formation, team development, and culture change. He is passionate about equipping leaders to become spiritually grounded, emotionally healthy, and practically prepared to serve with excellence. Ron brings a pastoral voice, a builder’s mindset, and a deep commitment to helping leaders thrive and lead with purpose.

Leah Klingseis

ONE&ALL Leadership Development Pastor
Leah Klingseis is a pastor, leadership developer, educator, and disciple-maker who is passionate about equipping people to discover their God-given calling and take faithful next steps in leadership. As Pastor of Leadership Development at ONE&ALL Church, she leads church-wide leadership formation, develops pathways for emerging leaders, and created Created for Good Works, a curriculum rooted in Ephesians 2:8–10. Leah also brings 18 years of higher education experience from Azusa Pacific University, serving in enrollment leadership and as an adjunct professor. Drawing from her background in education and organizational leadership, Leah brings a unique blend of pastoral care, strategic thinking, and practical equipping to help the church cultivate spiritually mature leaders who serve with humility, courage, and purpose.

Heather Jarvie

ONE&ALL Associate Discipleship Pastor
Heather Jarvie serves as an Associate Pastor at ONE&ALL Church in Southern California, where she helps people discover their God-given purpose and take meaningful next steps in discipleship and leadership. She is also a California-credentialed multiple-subjects teacher, bringing a strong background in education, communication, and people development to her ministry work. Heather is passionate about equipping others to grow in faith, lead with purpose, and live out their calling.