In How People Change, Paul David Tripp and Timothy S. Lane argue that sanctification is not a solo endeavor. While modern culture often celebrates self-reliance and independence, the Christian life is designed to thrive within the context of community. Tripp emphasizes that God uses relationships to shape us, encourage us, and challenge us, making community a vital ingredient in the sanctification process.
At the heart of Tripp’s message is the belief that sanctification isn’t just about external change—it’s about heart-level transformation. This kind of change requires honesty, accountability, and support, which are best cultivated in relationships with other believers. Left to ourselves, we’re prone to blind spots, self-deception, and stagnation. Community brings the gospel to life by giving us a space where grace and truth intersect.
Tripp explains that God designed the church to be a sanctifying community—a place where believers help one another grow in Christlikeness. This happens as we lovingly confront sin, encourage one another with Scripture, and remind each other of the gospel when life gets messy. Sanctification isn’t just about personal spiritual disciplines; it’s about opening ourselves up to the influence of others who can help us see areas where we need to grow.
Community also helps us apply the gospel in practical, everyday ways. It’s one thing to read about forgiveness in the Bible; it’s another to practice it when a friend lets us down or a small group member says something hurtful. Relationships provide the “heat” of life that reveals what’s really in our hearts, whether it’s impatience, pride, or a lack of faith. Through these interactions, God shapes us, teaching us to love, serve, and reflect Christ more fully.
Tripp points out that sanctification through community is not always easy. Relationships can be messy and uncomfortable, especially when others confront us about sin or challenge our perspective. Yet, this discomfort is part of God’s sanctifying work. Proverbs 27:17 says, “As iron sharpens iron, so one person sharpens another.” Sharpening isn’t a painless process, but it’s necessary for growth.
In addition to accountability, community offers encouragement. Tripp reminds us that sanctification is a lifelong process, and it’s easy to grow discouraged along the way. Being surrounded by people who remind us of God’s promises, celebrate our progress, and point us back to Christ helps us persevere. Community reflects God’s grace in tangible ways, reminding us that we are not alone in the journey.
Tripp also emphasizes the importance of gospel-centered community. Relationships that are merely social or surface-level won’t lead to true transformation. Sanctification happens when community is shaped by the Word of God and the work of the Spirit. This means creating spaces where honesty is welcomed, grace abounds, and Scripture is central.
Ultimately, How People Change calls us to embrace the reality that God uses others to sanctify us. In community, we see the gospel at work—through shared burdens, mutual encouragement, and honest accountability. Sanctification is personal, but it’s never private. God’s design is for His people to grow together, reflecting His love and transforming power in a broken world.
If you would like to explore this new study, it is available on Amazon, as well as part of Good Questions Have Groups Talking
