The voice which spoke during creation, the voice which spoke to the saints and prophets of old, is what became Jesus. Imagine, your words manifesting into a human being, that’s power, Jesus is the Word of God manifested. The Word became a human being and lived here with us, We saw his true glory, the glory of the only Son of the Father [John 1:14 GNV]. Whatever comes out of the mouth of the Father is God, so Jesus is God. In the beginning was the Word, and the Word was with God, and the Word was God [John 1:1 KJV]. He became Jesus after he was born of a virgin, before that he was the living Word of God.
Before Jesus came to Earth, he was not called Jesus, his name was called the Word of God. Revelation 13:19 says, "He is clothed in a robe dipped in blood, and the name by which he is called is The Word of God [ ESV]. John wrote of him and said, “That which was from the beginning, which we have heard, which we have seen with our eyes, which we have looked upon, and our hands have handled, of the Word of life; For the life was manifested, and we have seen it, and bear witness, and shew unto you that eternal life, which was with the Father, and was manifested unto us [John 1:1-3 KJV].”