The term "Son of God" is commonly used in Christianity to refer to Jesus Christ, who is believed to be both fully divine and fully human. Christians view Him as the second person of the Holy Trinity, which includes God the Father and the Holy Spirit. This title emphasizes His unique relationship with God and His role in the salvation of humanity. In the New Testament of the Bible, the title "Son of God" is used to highlight Jesus' divine authority and His mission on Earth. It signifies His role as the Messiah, who came to teach, heal, and ultimately sacrifice Himself for the sins of humanity, offering believers the promise of eternal life.