Here is a quote from Dictionary of Christian Lore and Legend, by J. C. J. Metford:

"It is known that the Greek name endings of sus, seus, and sous (which are phonetic pronunciations for Zeus) were attached by the Greeks to names and geographical areas as a means to give honor to their supreme deity, Zeus. Examples given are: Parnassus, a sacred mountain in Greece: the Greek deity of wine and son of Zeus, Dionysus; the Greek hero of the Trojan war was Odysseus, and the Greek deity of healing was Iesous or the Latin Iesus/Jesus. They also changed the names of the prophets EliYahu (whose name means 'my mighty one is Yah') and Elyesha (whose name means 'my mighty one saves'), to 'Elias' and 'Eliseus' (which means 'my mighty one is Zeus'). This was done so often that it later was the basis for their rules of written grammar which followed the common or vernacular spoken language."


http://frank4yahweh.webs.com/thenamejesus.htm