Where is Lucifer mentioned in the Bible?

Answer 1

The name Lucifer, meaning the morning star, was used in an ironic sense in Isaiah 14:4-22, to refer to the king of Babylon after his defeat by the Persians. He had imagined that after he died, the gods would take him up among the stars, thus the sarcastic reference to the morning star, translated as Lucifer. The author, Isaiah II, expressed the Jews' widespread delight at his downfall. This passage was misunderstood by Christian translators, who believed that it referred to the devil, resulting in the widespread Christian view that Lucifer and Satan are one.