What does the Bible say about Jesus being the Alpha and Omega?

In Revelation 1:8, Jesus identifies Himself as the Alpha and Omega, which denotes His eternal nature and preeminence in all things. This title signifies that He is both the beginning and the ending, illustrating His sovereignty over creation, history, and the unfolding of God's redemptive plan. The repetition of this title throughout the Book of Revelation highlights the centrality of Christ in God's revelation and His definitive role in salvation history. As the Alpha and Omega, Jesus encompasses all aspects of existence, representing the entire scope of God's purpose and authority.