1942, dissertation; Polliack and Schlossberg 2009) Joel (Schroeter 1871; Klein 1897; Lehrman 1927, dissertation; Marwick 2003) Amos (Tomal 2000, dissertation; Marwick 2003; Nadler-Akirav 2009, dissertation, 2021) Obadiah (Friedmann 1901; Polliack and Schlossberg 2002) Jonah (Marwick 2003; Schlossberg 2004; Andruss 2007, M.A. thesis) Micah (Szadzunski 1937, dissertation; Marwick 2003) Nahum (Hirschfeld 1911) Habakkuk (Livne-Kafri 1993) Zephaniah (Heisz 1902; Polliack and Schlossberg, 2020) Haggai (Nadler-Akirav 2021) Zechariah (de Vreugd, announced) Malachi (Nadler-Akirav 2021) Psalms (Bargès 1846, 1861; ben-Shammai 1976) Proverbs (Z. Auerbach 1866; E. Günzig 1898; Sasson 2015) Job (ben-Shammai 1969, M.A. thesis; Hussain 1987, dissertation; Sadan 2020) Song of Songs (Jung 1867; Bargès 1884; Alobaidi 2010) Ruth (N. Schorstein 1903, dissertation; Markon 1927; Nemoy 1952; Butbul 2003) Ecclesiastes (Bland 1966; Vajda 1971; ben-Shammai 1976) Esther (Wechsler 2006, dissertation, 2008) Daniel (Margoliouth 1889) Other works He was also known for his expertise of Hebrew grammar, and for his polemics against Rabbinic Judaism, Islam, and Christianity. One of his comments about the Rabbanites, writing on his Arabic commentary on Isaiah, Yefet ben Ali digresses as follows: "This section refers to the people of the Diaspora and to the best among them as well. They are at present divided into four classes : The Exilarchs who pretend to be the possessors of knowledge; The common people who neither desire wisdom nor think about it; they know no more about religion than to go to the Synagogue from Sabbath to Sabbath and to say "Amen" and "Shema Yisrael"; The studious among the common people, whom the Exilarchs teach them the nonsense of the Talmud, and sorcery, instead of what might profit them; The "Maskilim" (Karaite teachers) who, endowed with the knowledge of the Torah, are generous with the dissemination of their wisdom, in return for which they accept no recompense). Before devoting himself to Biblical exegesis Yefet wrote several other works of lesser importance. Among these were: an epistle in rimed prose refuting the criticism on Karaism by Jacob ben Samuel, surnamed by the Karaites "ha-'Iḳḳesh" (= "the intriguer"), published by Pinsker in his "Liḳḳuṭe Ḳadmoniyyot", p. 19. Yefet endeavors in this epistle to demonstrate that there is no trace of oral tradition in Scripture, and consequently the Mishnah, Talmud, and other rabbinical writings fall under the prohibition "Ye shall not add unto the word which I command you" (Deut. iv. 2). "Sefer ha-Miẓwot", treating of the precepts, and containing many controversies with the Rabbinites;