 The ultimate paradox contemplated in meditative Chabad prayer is its acosmic panentheism that leads to "Bittul" self-nullification and inward "Hitpa'alut" ecstasy.While each Chabad leader developed and deepened these contemplative themes, the thought of the last Rebbe treated Hasidic thought not as a self-contained mystical study, but much more widely as the inner unifying divine essence of all parts of Torah, expressed in analytical talks that united the exoteric and esoteric, mystical and rational of Judaism, and emphasised the corresponding unity of the whole Jewish people.In the theology of Menachem Mendel Schneerson, the ultimate Divine essence, expressed through Hasidism's soul essence, is revealed in practical action and Jewish outreach that makes a messianic dwelling for God.