Phil,
It is not contradictory, but rather misunderstood.
The "connection" between lucifer (lucem ferre in the Latin) and satan (ha satan in the Hebrew) seems to occur because of a proclamation to the ancient king of Tyre, where it states he had fallen out of favor with Creator/the gods. The proclamation is quite colorful and dramatic, as I suppose and such proclamation would be.
Tyre (formerly called Ushu, currently called Sour) is a very old port city, in current day Lebanon, and once was the major trade-hub and crossroads of the ancient world. It is particularly famous because of its access to the Sea and to the East. Second, is its theological fame. As a foundry of Phoenician folk, Tyre was once a Ba`al Samem (El, lord of all the heavens) practicing state. As history notes, it changed from Ba`al to the worship of Melqart/Hercules. It also notes that the King -not the priests- was the liaison between humans and the gods, which explains the proclamation in its entirety. It closely resembles the Pharaohs of Egypt and their liaison to Ra. Third is it's alliance with the Israelites, which expanded its trade capabilities. Lastly, its fortification as part island part land-state. Nebuchadnezzar II tried to take the city for nearly a decade (which is clearly noted in the proclamation) but eventually failed. Alexander the Great seized it after much trouble. And of course later on the Romans would annex it, then the Byzantine Empire and finally the Islamic conquest.
Grammatically and historically there is no real connection between the two terms. Seems this king broke covenant/agreement with the Israelites and decided Tyre would be greater than Jerusalem -as the gateway to the world and religious epicenter. Hence a proclamation against the city itself and also against the king himself by the Hebrew prophet Ezekiel.
The term lucem ferre in Latin means light-bearer, keeper of the light. It is associated with Venus, the bright morning star that illuminates the world. Given the time-period, beliefs and events, it makes sense this term would be used against Tyre because the king was considered the bearer of light, the messenger of the heavens.
And yes, you are correct, the term ha satan does translate to mean adversary, as well as stumbling block, blinder -and most importantly: the Ego. The term was translated into Latin and Germanic to mean The Devil. As with many early beliefs, all forces were defined as entities rather than expressions of human personality. The "Devil" is real, but it is not what most assume. It is not an angel gone astray but rather the force that separates humans from their true nature as immortal reflections of the Ineffable everything. The evil one is the Ego, it is Reason, the divided house which brings humans only one thing: destruction.
Cheers!
