Lucifer

Lucifer is a translation of the Latin words lucem ferre (from lux "light" and ferre "carry") meaning the "light-bearer". It was the name given to the morning star, i.e., the planet Venus when seen at dawn.

The only time the name "Lucifer" appears in the old testament is in Isaiah xiv:12, where he calls the King of Babylon "Helel" (הֵילֵל, Shining One), a Hebrew word that refers to the Day Star or Morning Star (the Latin term for which is lucifer). The verse was interpreted as a reference to Satan in early Christianity, in the 2nd or 3rd century.</ref>Lucifer at Online Etymology Dictionary

Further reading

• Lucifer at Theosopedia