There is no Lucifer in Torah. That horror was written into Vatican-commissioned translations.
There is HaSatan in Torah. HaSatan, nasty piece of work though he may be, is an angel of God and ultimately carries out God's will. HaSatan is the only angel so absolutely and utterly dedicated to God and so absolutely and utterly trusting of God's will that it is able to carry out the most difficult tasks when punishment must be meted out.
The idea of Lucifer, however, is utterly foreign to the Jewish mind and heart. The idea that there is a power that stands in opposition to God, vies with God for absolute power and wants the entire creation to be hell - is an idea hatched in the diseased hearts and minds of Euro-gentiles.
I would go so far as to say that Lucifer is the real god of the Euro-gentiles. Their obsession with Lucifer goes far beyond their love of God.
The reason why I reject Christianity utterly is because Christianity *demands* a belief in Lucifer.
Doreen Ellen Bell-Dotan, Tzfat, Israel