The New Testament was written in Greek and not Hebrew. It did distinguish between the two. In other words the BIBLE which talks about Jesus and his life here was WRITTEN IN GREEK and Greek is very clear and explicit on the matter.
Martin Luther, Calvin and Swingli...all reformers of the church...apparently didn’t get the memo...so it must have developed after their time...
Calvin also up held the perpetual virginity of Mary, as did the Swiss reformer, Ulrich Zwingli (1484-1531), who wrote:
I firmly believe that Mary, according to the words of the gospel as a pure Virgin brought forth for us the Son of God and in childbirth and after childbirth forever remained a pure, intact Virgin. (Zwingli Opera, Corpus Reformatorum, Berlin, 1905, v. 1, p.