<Tr> <Td_colspan="2"> "Ein feste Burg" with Luther's signature </Td> </Tr> <Tr> <Th> Written </Th> <Td> c. 1529 (1529) </Td> </Tr> <Tr> <Th> Text </Th> <Td> by Martin Luther </Td> </Tr> <Tr> <Th> Language </Th> <Td> German </Td> </Tr>

Who wrote the song a mighty fortress is our god