David Cohen

David Cohen (Hebrew: דוד כהן; 1887–8 August 1972)[1] (also known as "Rav Ha-Nazir," the Nazirite Rabbi) was a rabbi, talmudist, philosopher, kabbalist, and a disciple of Rabbi Abraham Isaac Kook. A noted Jewish ascetic, he took a Nazirite vow at the outbreak of World War I. -WIkipedia