Elective Modules / Ministry

Conquering the Sin Nature

Dr. Berin Gilfillan

Conquering the Sin Nature

Master the battle against sin with insights on the Holy Spirit’s power, yielding to God, and achieving victory in the Christian walk.

1 Video Lesson

Watch, listen, and learn as Berin Gilfillan shows you how to master the battle against sin.

Course Guide

A FREE workbook that guides you through the course.

Stream Anywhere

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Course Preview

Conquering the Sin Nature

Dr. Berin Gilfillan covers this first course in the ISOM Core.


Conquering the Sin Nature, led by Dr. Berin Gilfillan, is a foundational message essential for personal and ministerial success. Addressing the mind-struggle depicted in Romans 7, this course unveils four crucial revelations. Participants will learn the universality of the sin nature, the distinction between its existence and yielding to it, the futility of self-efforts in conquering it, and the transformative power of the Holy Spirit. The teachings emphasize rejecting condemnation, shifting mindsets, and partnering with God for victory over the sin nature. Through practical insights and biblical truths, students will gain a profound understanding of overcoming sinful thoughts and living in the freedom offered by the Holy Spirit.

What You’ll Learn

  • Universality of the sin nature
  • Distinction between sin nature’s existence and yielding to it
  • Futility of self-efforts in conquering the sin nature
  • Transformative power of the Holy Spirit
  • Rejecting condemnation and shifting mindsets
  • Partnering with God for victory over the sin nature


1. Conquering the Sin Nature

Dr. Berin Gilfillan’s session on Conquering the Sin Nature is vital for ISOM, emphasizing personal victory. Rooted in Romans 7, the teaching unveils four key insights. It asserts that everyone, including figures like Billy Graham, inherits a sin nature from Adam, not sin to God, but yielding to it is. Dr. Gilfillan stresses personal efforts can’t conquer the sin nature; triumph comes through yielding to the Holy Spirit. By highlighting the ongoing battle between the flesh and the Holy Spirit, the session guides collaboration, silencing the sin nature. It imparts transformative understanding, affirming freedom from the law of sin and death through surrender to the Holy Spirit’s power. 



Quick Facts


English, French




0.38 credit units

No. of Sessions

1 Sessions

Running Time

22 minutes

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About the Instructor

Dr. Berin Gilfillan

Dr. Berin Gilfillan is a South African-born American minister, businessman, and author, is widely recognized as the visionary behind Good Shepherd Ministries, International (GSMI) and the groundbreaking International School of Ministry (ISOM).

Born a U.S. citizen through his mother, Dr. Gilfillan’s upbringing unfolded in the vibrant landscape of South Africa. After completing his education at Hilton College in Kwazulu, Natal, in 1979, he embarked on a transformative journey to the United States. In 1983, he graduated with a Bachelor of Arts in Communications from the University of Michigan, and soon after, pursued a Master’s degree in Communication from Regent University in Virginia Beach.

The pivotal chapter in Dr. Gilfillan’s life unfolded when he and his wife, Lisa, relocated to Frankfurt, Germany, to collaborate with renowned evangelist Reinhard Bonnke. From 1986 to 1989, as the Television Producer at Christ for all Nations (CfaN), Dr. Gilfillan played a key role in producing documentaries and managing the technical aspects of major conferences across Europe, Asia, and Africa.

Following his impactful tenure with Reinhard Bonnke, Dr. Gilfillan returned to the U.S. to pursue theological studies at Fuller Theological Seminary from 1990 to 1991 under the mentorship of Dr. C. Peter Wagner. It was during this period that he founded Good Shepherd Ministries, International (GSMI), leading his family on a two-year missionary journey to Nigeria, where they established numerous video Bible schools and a lasting preschool.

From 1994 to 2000, GSMI produced the foundational ISOM Core material, featuring teachings from influential figures like Joyce Meyer, T.L. Osborn, and Reinhard Bonnke. Simultaneously, Dr. Gilfillan served as the Children’s Pastor at Cottonwood Church, overseeing spiritual development for over 1,200 children.

In 2005, Dr. Gilfillan co-created YouthBytes, a curriculum for teens, with Chad Daniel. Subsequently, he earned a Doctor of Ministry from Vision International University in 2006, focusing on multiplication growth in the Global Church, as outlined in his book Unlocking the Abraham Promise. His recent book Pursuing Maturity, he shares his experience with ISOM mentoring and discipleship in the journey towards maturity.

Currently splitting his time between Redlands, California and Kissimmee, Florida, Dr. Gilfillan spearheads GSMI with a dedicated team, producing diverse video training productions for pastors and churches globally. Notably, GSMI’s portfolio includes specialized curricula like WOW (Women’s curriculum), Marketplace Module (Business curriculum), and CDBoks (Community Development program).

As Dr. Gilfillan continues to lead missions trips and develop new content for the global Church, he remains deeply rooted in his commitment to education and ministry. Beyond his professional pursuits, he finds joy in spending time with his grandchildren Liliana, Ari, and Maya.


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