What does the Bible say about Alpha and Omega?

In Revelation 1:8, Christ declares Himself to be Alpha and Omega, signifying that He is the beginning and the end of all things. This statement emphasizes His eternal existence, asserting that there was nothing before Him and nothing after Him. As the first and the last, Christ embodies the fulfillment of all creation and history, establishing His divine sovereignty over the universe. His claim as Alpha and Omega confirms His role in both creation and redemption, marking Him as the eternal God who governs all aspects of existence.