 Because of the destruction of the temple in Jerusalem in 70 AD, Jewish worship has focused on prayer and the study of Torah.Nevertheless, Leviticus constitutes a major source of Jewish law and is traditionally the first book children learn in the Rabbinic system of education.There are two main Midrashim on Leviticus—the halakhic one (Sifra) and a more aggadic one (Vayikra Rabbah).