How do we know that Jesus is God and man?

The theological understanding that Jesus is both God and man is foundational to Christology. In 1 John 1:1-3, John establishes his credentials by stating he was an eyewitness to Christ's life, establishing that Jesus was not a phantom but a real person who was both divine and human. John's Gospel further supports this, where in John 1:14, it states that 'the Word became flesh and dwelt among us.' This reality is crucial for understanding the incarnation, where Jesus, the eternal Son, took on human nature to redeem His people. The authenticity of Christ’s dual nature is confirmed by the miracles He performed, which demonstrated His divine power and affirmed His identity as the Son of God.