The NASV and the Amplified Bible are based on the Westcott and Hort texts. Here is a note from the Amplified Bible - Isaiah 14:12. Tell me that this is not evil and satanic:

"'Light-bringer' or 'Shining one' was originally translated Lucifer , but because of the association of that name with Satan it is not now used. Some students feel that the application of the name Lucifer to Satan, in spite of the long and confident teaching to that effect, is erroneous. Lucifer, the light-bringer is the Latin equivalent of the Greek word Phosphoros , which is used as a title of Christ in II Peter 1:19 and corresponds to the name 'bright Morning Star' in Revelation 22:16, which Jesus called Himself."