You must remember that Christ was not in Greece. The Greek Septuagint was not written at the time of Christ, but after it.
The people in Judea spoke Hebrew and thus Christ's name would have been the Hebrew pronunciation as Yahshua. Our English version of the New Testament was derived from the Greek and not the Hebrew, thus the confusion.
The people in Judea spoke Hebrew and thus Christ's name would have been the Hebrew pronunciation as Yahshua. Our English version of the New Testament was derived from the Greek and not the Hebrew, thus the confusion.