Mordechai Yosef Leiner

Rabbi Leiner is best known for his work Mei Hashiloach, a compilation of his teachings by his grandson, in which he expressed the doctrine that all events, including human actions, are absolutely under God's control, or as Rabbinic discourse would phrase it, by "hashgacha pratis." Thus, if everything is determined by God, then even sin is done in accordance with God's will. He presents defenses of various Biblical sins, such as Korach's rebellion, Zimri during the Heresy of Peor, and Judah's incident with Tamar.

One of his most cited comments is on Leviticus 21:1 :

None shall defile himself for any [dead] person among his kin.

Rabbi Leiner read the verse as a warning against the defilement of the soul. The soul is defiled when it is infected with the bitterness and rage that comes with senseless suffering and tragedy. Those who — like the Kohanim— would serve God, are commanded to find the resources to resist the defilements of despair and darkness. Despair is the ultimate denial of God, and surrender to darkness is the ultimate blasphemy.

The publication of Mei Hashiloach was met with controversy and some burned copies of the work.[3]

Alan Brill of Seton Hall University has suggested that the teachings of Rabbi Jonathan Eybeschutz may have influenced Rabbi Leiner's thinking.[4]

Rabbi Leiner was the right-hand man of the Kotzker rebbe, Rabbi Menachem Mendel of Kotzk, by whom he was charged with overseeing the Hasidim. In 1839 Leiner had a public and dramatic falling out with the Kotzker Rebbe. On the day after Simchat Torah of that year, Leiner left Kotzk with many of his followers to form his own hasidic circle. The reasons given for the break are varied.

His thought influenced (mostly indirectly, through the work of Leiner's student, Reb Tzadok Hakohen) the mussar of Rabbi Isaac Hutner and Rabbi Moshe Wolfson.

Leiner's thought continued to have influence in the twentieth century, especially on Neo-Hasidism, and the teachings of Rabbi Shlomo Carlebach (the "singing rabbi").

Rabbi Shlomo Carlebach is credited with the recent popularization of Rabbi Leiner's teachings. He apparently came across Rabbi Leiner's work in an old Jewish book store. He is quoted as saying that after initially being perplexed as to the peculiar nature of the teachings he quickly realized that in it lay the "secret for turning Jews on to the deeper meanings of Judaism".

• Mei Hashiloach 2 volumes
• Living Waters : The Mei HaShilo'ach translated by Betsalel Philip Edwards

• Alan Brill, Thinking God: The Mysticism of Rabbi Zadok HaKohen Of Lublin (Yeshiva University Press, Ktav 2002)
• Morris M. Faierstein, All is in the Hands of Heaven: The Teachings of Rabbi Mordecai Joseph Leiner of Izbica (New York: Ktav, 1989) (2nd revised edition, Gorgias Press, 2005)
• Shaul Magid, Hasidism on the Margin (University of Wisc. 2003)
• Allan Nadler, "Hasidism on the Margin: Reconciliation, Antinomianism, and Messianism in Izbica/Radzin Hasidism (review)" Jewish Quarterly Review - Volume 96, Number 2, Spring 2006, pp. 276–282
• Rivka Schatz, "Autonomy of the Spirit and the Law of Moses" (Hebrew), Molad 21 (1973–1974), pp. 554–561
• Joseph Weiss, "A Late Jewish Utopia of Religious Freedom," in David Goldstein, ed., Studies in Eastern European Jewish Mysticism (Oxford: Oxford University Press, 1985)
• Jonatan Meir, "The Status of Commandments in the Philosophy of Rabbi Mordechai Joseph Leiner of Izbica’, Mishlav 35 (2000), pp. 27-53
• Herzl Hefter, In God's Hands: the Religious Phenomenology of R. Mordechai Yosef of Ishbitz, Tradition 46:1(2013), pp. 43–65.

• Mei HaSiloach
• Yearly Conference notice at the Wayback Machine (archived February 14, 2008)
• Lectures