The term Judeo-Christian is used to group Christianity and Judaism together, either in reference to Christianity's derivation from Judaism, Christianity's recognition of Jewish scripture to constitute the Old Testament of the Christian Bible, or values supposed to be shared by the two religions. The term Judæo Christian first appeared in the 19th century as a word for Jewish converts to Christianity. The term has received criticism, largely from Jewish thinkers, as relying on and perpetuating notions of supersessionism, as well as glossing over fundamental differences between Jewish and Christian thought, theology, culture and practice.