How do we know that Jesus was truly God?

In John 1:1, we read, 'In the beginning was the Word, and the Word was with God, and the Word was God.' This profound declaration establishes that Jesus is not merely a prophet or a teacher but is God himself. The assertion of his divinity is crucial because it underscores the authority of His teachings and His ability to save. The fullness of the Godhead is contained in Him, and as the eternal Son, He is pre-existent, existing before all creation. This truth is further supported throughout the New Testament, where Jesus performs miracles, forgives sins, and ultimately fulfills the law, which only God can do.