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Avraham Yitsḥaq haKohen Ḳooḳ
Avraham Yitsḥaq haKohen Ḳooḳ

Abraham Isaac Kook (Hebrew: אַבְרָהָם יִצְחָק הַכֹּהֵן קוּק HaRav Avraham Yitzchak HaCohen Kook, also known by the acronym הראי״ה (HaRaAYaH); 7 September 1865 – 1 September 1935) was the first Ashkenazi Chief Rabbi of British Mandatory Palestine in the Land of Israel, the founder of Yeshiva Mercaz HaRav (The Central Universal Yeshiva), a Jewish thinker, Posek, Kabbalist, and a renowned Jewish sage. He is considered one of the fathers of religious Zionism.

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The Open Siddur Project is a volunteer-driven, non-profit, non-denominational, non-prescriptive, gratis & libré Open Access archive of contemplative praxes, liturgical readings, and Jewish prayer literature (historic and contemporary, familiar and obscure) composed in every era, region, and language Jews have ever prayed. Our goal is to provide a platform for sharing open-source resources, tools, and content for individuals and communities crafting their own prayerbook (siddur). Through this we hope to empower personal autonomy, preserve customs, and foster creativity in religious culture. If you like what you've found here, please help keep our project alive and online with your financial contribution.

ויהי נעם אדני אלהינו עלינו ומעשה ידינו כוננה עלינו ומעשה ידינו כוננהו "May the pleasantness of אדֹני our elo’ah be upon us; may our handiwork be established for us — our handiwork, may it be established."–Psalms 90:17