In this message on "Blessed Assurance," Ken explores how the Apostle John wrote his first letter to help Christians know with certainty that they have eternal life, addressing the confusion caused by false teachers who had left the church. He outlines three key areas of Christian assurance: knowing the true identity of Jesus as the Son of God, having certainty about your conversion through three tests (believing Jesus is God's Son, walking in the light through moral transformation, and loving fellow believers), and trusting in the security of your salvation even when you fail. Ken emphasizes that true assurance comes not from perfect performance but from humble dependence on Christ, who serves as our advocate when we confess our sins and get back on the path of faith.