B’Midbar, the fourth book of the Torah, is so named since it begins “Vay’daber Adonai el-Mosheh b’midbar Sinai (And the LORD spoke to Moses in the wilderness of Sinai).” Midrash Rabbah B’Midbar asks, “Why does Adonai give the Torah in the Wilderness?” It goes on to explain that Torah is given in fire, water, and wilderness.