Sandy Higgins examines the biblical doctrine of repentance, defining it as a radical change of mind that impacts the intellect, will, and emotions rather than merely feeling sorry or fearing punishment. Drawing from passages including Matthew 3:1, Luke 17:3, Acts 17:30, 1 Thessalonians 1:9, Revelation 3:3, and Genesis 6:5, Higgins outlines God's command for all people to repent and clarifies that true repentance requires altering one's thinking regarding God, sin, self, and Christ. He addresses the internal obstacles of human pride and spiritual blindness, while distinguishing between the repentance required of sinners for salvation, the ongoing need for believers and local assemblies to repent, and the necessity of mutual repentance and forgiveness when offenses occur between Christians.