The book of Revelation introduces God as the beginning and ending point of all things.
God says, “I am the Alpha and the Omega.” Alpha is the first letter in the Greek alphabet and Omega is the last letter. Therefore, God is the beginning and ending point of everything. Later in Revelation, Christ will also identify himself as the Alpha and Omega, the first and last, the beginning and the end (22:13). Since these statements appear in the first and final chapters, they serve as bookends for the whole message. Some have noted that in Revelation the end is not an event but a person. It is not so much that the book moves from one event to another as that it keeps moving back to God and Christ again and again. According to Revelation itself, God and Christ are the end of all things.