"[4] Though he refused to be baptized into the Christian faith his whole life,[5] he ultimately retired from his Rabbinical post at the age of 68 in 1892 due to failing health.

[6] The Jewish historian Gotthard Deutsch, an editor of the Jewish Encyclopedia, in an essay published 3 February 1916, mentions him, fallaciously, in the course of refuting a claim by the Chief Rabbi of London that no rabbi had ever become a convert to Christianity.

[4] Followers of Messianic Judaism mention him as an example of a turn of the 19th century "Jewish believer in Jesus.

"[5] Catalogues of works authored by the Rabbi, including this one, may make dubious attributions.

Deutsch, for example, notes he is confused with a Rabbi Jehiel Lichtenstein (1831–1912) who worked for a missionary institute in Leipzig.