A rabbi (; Hebrew: רַבִּי‎, romanized: rabbī) is a spiritual leader or religious teacher in Judaism. One becomes a rabbi by being ordained by another rabbi—known as semikha—following a course of study of Jewish history and texts such as the Talmud. The basic form of the rabbi developed in the Pharisaic (167 BCE – 73 CE) and Talmudic (70–640 CE)...