In Revelation 22:16, Jesus identifies himself as "the bright and morning star," symbolizing his role as the light and hope that heralds a new dawn, both for believers and the world
The phrase "morning star" is used in the Bible to describe "Lucifer" often used to refer to Satan, signifying a "light-bringer" or "morning star" who once held a position of glory before his descent.
The verse in Isaiah 14:12 reads: "How art thou fallen from heaven, O Lucifer, son of the morning! how art thou cut down to the ground, which didst weaken the nations!".
The Septuagint (LXX) "morning star" (ἐωσφόρος), a derivative of Φωσφόρος, the Greek word for Venus. The Latin Vulgate translates the word as "Lucifer", which is why the term "Lucifer" is often associated with the passage.