This study guide explores the metaphor of the vine and branches in John 15 to define the core of a healthy Christian life. It emphasizes that believers must abide in Jesus as their source of life, much like a plant requires a connection to its vine to receive nutrients. This spiritual connection leads to pruning, a process where God uses His word to remove sin and refine the believer's character. True growth is evidenced by bearing fruit, which involves obeying God’s commandments and reflecting His love through service to others. By remaining deeply rooted in Christ, individuals find complete joy and prove their status as disciples. Ultimately, the text argues that apart from this vital relationship, a person cannot fulfill their divine purpose or glorify the Father.