 During the 20th century, academic interest in Kabbalistic texts led primarily by the Jewish historian Gershom Scholem has inspired the development of historical research on Kabbalah in the field of Judaic studies.According to the "Zohar", a foundational text for kabbalistic thought, Torah study can proceed along four levels of interpretation (exegesis).These four levels are called "pardes" from their initial letters (PRDS , orchard).