Yochanan 1:6-9

There came an ish haElohim (a man of G-d), having been sent from HASHEM. His name was Yochanan. This Yochanan came for an eidus (witness), that he might give solemn edut (testimony) about the Ohr, that kol Bnei Adam might have emunah through him. This ish haElohim was not the Ohr, but he came that he might give solemn edut (testimony) about the Ohr. The Ohr, the Ohr HaAmitti (the True Light), which gives rational haskalah (enlightenment) to kol Bnei Adam (all mankind), was coming into the Olam Hazeh.