Shlomo Ephraim ben Aaron Luntschitz

Shlomo Ephraim Luntschitz, popularly known as Kli Yakar after his homiletic commentary on the Torah, was a Polish rabbi who served as chief rabbi of Prague after the Maharal. He was famed as a gifted preacher whose derashot, or sermons, would captivate his many listeners. His writings focus on ethical matters, and his collected homiletical interpretations of Torah passages, Kli Yakar, remains one of the most popular works of its kind.