The alleged Divinity of Jesus

The gospel of John opens with the passage “In the beginning was the Word, and the Word was with God, and the Word [Jesus?] was God”. The Nicene Creed states that Jesus Christ is the begotten Son of God, being of one substance with the Father. Did Jesus clearly declare anywhere in the gospels that he is the Son of God? In John 10:30 Jesus declares “I and my Father are one”. Does this imply that Jesus is the only begotten Son of God, or that each human being is also essentially one with the Father? Was Jesus a Divine Being with a human nature, or was he an example of how the Christ Consciousness could be manifested in each human being?