[xone]

Then what your saying is Luther had his own opinions. And that is all they are. Luther had no authority.

God's Word was Luther's authority.

wikipedia

lcms.org

[Cap'n Crunch]

Martin Luther believed that Mary did not have other children, and did not have any marital relations with Joseph,[25] maintaining, that the brothers mentioned were cousins.[26] This is consistent with his lifelong acceptance of the idea of the perpetual virginity of Mary.