That is a short definition but the otherside would not let it pass as biblical proof. There are a lot more verses that confirm they are one. I laughed once when Fat asked a poster, 'who is the father of Christ?' and then went on to prove it was the Holy Ghost, not the Father.
Then you have Both claiming to be the Alpha and Omega, hard for them to explain. Hard for us humans to understand.
Rev 1:8 I am Alpha and Omega, the beginning and the ending, saith the Lord, which is , and which was , and which is to come , the Almighty.
Rev 22:13 I am Alpha and Omega, the beginning and the end, the first and the last.