How do we know that Jesus is God and capable of saving us?

Jesus's divine nature is affirmed throughout scripture, particularly in His role as the second person of the Trinity. In the sermon, it is emphasized that He is God the Son, the eternal creator who became man through the miraculous virgin birth as prophesied in Isaiah 7:14. This uniqueness is crucial because only as both fully God and fully man could He bear the weight of humanity's sin and accomplish our salvation. Without His divine nature, He would not have the authority to save us. Therefore, His ability to save is rooted in His identity as God.