How do we know that Christian behavior matters?

Christian behavior is of utmost importance as it demonstrates the authenticity of one's faith. Manton argues that as Christians are called after Christ's name, their conduct should mirror His character. This is echoed in passages like Titus 2:10, which calls believers to make the teaching about God attractive through good deeds. The apostle Paul was not ashamed of the gospel (Romans 1:16), emphasizing the weight of how Christians represent their faith. Therefore, the behavior of Christians serves as both a witness to the world and a testament to the transforming power of the gospel in their lives.