Rabbi Shimon bar Yochai was a prominent Jewish sage and mystic who lived in the 2nd century CE. He is best known for his teachings in the Kabbalah, a mystical interpretation of Jewish texts. Rabbi Shimon is traditionally credited with authoring the Zohar, a foundational work of Kabbalistic literature that explores the nature of God and the universe. He is also famous for his role in the Mishnah, a key text of Jewish oral law. Rabbi Shimon bar Yochai is celebrated on the holiday of Lag BaOmer, which commemorates his life and teachings, and he is often associated with themes of spiritual enlightenment and the pursuit of knowledge.