How do we know Jesus is called the Son of God?

In the Gospel of Luke, specifically in Luke 1:35, the angel Gabriel announces to Mary that the child conceived in her will be called the Son of God. This title is significant as it denotes Jesus' divine nature, affirming that he is both fully God and fully man. The phrase 'Son of God' illustrates that Christ shares the same essence as God the Father, setting Him apart from all created beings. This truth is foundational to Christian faith, as it declares Jesus not just as a prophet or a great teacher but as the divine Savior, affirming the doctrine of the Trinity. Furthermore, throughout the New Testament, Jesus’ divine sonship is consistently reinforced, culminating in His resurrection, which validates His identity and mission.