"디모데후서" (2 Timothy) is a book in the New Testament of the Christian Bible. It is a letter written by the Apostle Paul to his young protégé Timothy. The letter emphasizes the importance of faith, perseverance, and sound teaching in the face of challenges. In this epistle, Paul encourages Timothy to remain strong in his ministry and to uphold the teachings of Jesus Christ. It addresses issues such as false teachings and the need for spiritual discipline, providing guidance for church leaders and believers alike.