Delitzsch was baptized on March 4, 1813, at the big St. Nicholas Church in central Leipzig, with the name "Franz Julius".
His godfather's name was given on the baptismal record as Franz Julius Hirsch, a dealer in second-hand furniture.
[2] But the notion that Delitzsch's family harbored a secret Jewish identity under a Christian facade is not far-fetched.
[6] It is remarkable that these editions were composed before the modern revival of the Hebrew language, but the translations still remain fresh and alive for readers today.
In 1880 Delitzsch established the Institutum Judaicum in Leipzig for the training of Christian missionary workers among Jews.
Another Christian missionary to the Jews, John Duncan, wrote that Delitzsch "stood firm in maintenance of the divine authority and inspiration of the whole Old Testament" at a time when many "seemed willing to surrender".