Actually, his name was most probably pronounced "Yeshu" or "Yeshua". The spelling of Jesus was taken from a text in a language, I believe German, in which J is pronounced Ya. Anyway, during the translation, the translators used the spelling from the text. English people pronounced it with the normal English pronunciation of J, and the name Yeshua became Jesus. Oh, also, Jehovah is a product of translation. The original text was YHWH, probably pronounced YahWeh.