I read in Luke a spot where people, witnessing a miracle of Jesus, attribute it to Beelzebub "the chief of the devils."
The other apparent reference to that deity, in the Bible, is in 2 Kings 1. I have been researching, but there is not a great deal of information that I could find quickly on this particular deity, from reputable sources. Some places link him to Baal Hadad, but like many pagan gods, Baal pops up in various people groups and cultures, although some of the connections may be too speculative to count (one person even connected Baal to a celtic god).
It is almost a thousand years between the mention of Baal-zebub in 2 Kings and Beelzebub in Luke. I am wondering if there is any information on when worship of Baal in general faded away? I know with the merging and appropriating of gods it can be difficult to draw distinctions, but the Baal that is referenced in the Bible, particularly...was worship of that still going on in the Roman Empire and later?