In eternity past, God brought forth, His Only Begotten Son. They are one, in their glorious divinity, but two separate Beings.
John 3:16, 17 – For God so loved the world, that he gave his only begotten Son, that whosoever believeth in him should not perish, but have everlasting life. For God sent not his Son into the world to condemn the world; but that the world through him might be saved.
Matthew 1:23 – Behold, a virgin shall be with child, and shall bring forth a son, and they shall call his name Emmanuel, which being interpreted is, God with us.
John 1:1 – In the beginning was the Word, and the Word was with God, and the Word was God.
John 17:3-5 – And this is life eternal, that they might know thee the only true God, and Jesus Christ, whom thou hast sent. I have glorified thee on the earth: I have finished the work which thou gave me to do. And now, O Father, glorify thou me with thine own self with the glory which I had with thee before the world was.
John 8:58 -Jesus said unto them, Verily, verily, I say unto you, Before Abraham was, I am.