The central message of this sermon is that the Gospel of John, written by John the apostle, is a carefully crafted record designed to lead readers to faith in Jesus Christ as both the Messiah (Christ) and the Son of God. John's purpose is not to provide a comprehensive biography of Jesus' life but rather to select specific signs and events that demonstrate Jesus' true identity and mission. The sermon highlights that for John, being the Son of God is not just a title or a role, but an assertion of Jesus' divinity and equality with God. The writer emphasizes that this was a shocking and unprecedented claim in ancient Jewish culture, where people believed that only God was truly divine. By presenting Jesus as both Christ and Son of God, John aims to lead readers to believe in Jesus and, through faith, receive eternal life in His name. The takeaway is that the Gospel of John is not just a historical account but a deliberate attempt to persuade readers to accept Jesus as their Lord and Savior.