Does God Doubt? shows that Rabbi Gershon Henoch Leiner of Radzin considered God to be revealed as doubt. Thus, according to this profound and important nineteenth-century Hasidic leader, doubt is an essential aspect of the human condition, and especially of religious life. His position is shown to be remarkably bold and unique compared to kabbalistic writing, and especially to the Hasidic worlds to which he belonged. At the same time, the roots of his thought are located in earlier discussions of doubt as one of the highest parts of the divine world. Doubt about, in, and of God is part of the Hasidic contribution to modernity.