I heard that there was a sefer written that has approximately 100 answers to the question of whether the Avot kept all of the Mitzvot. If anyone know about this and has the name of the sefer and author, please let me know. I presume it's out of print. But it would nonetheless be helpful information. Thank you.

  • Elliot, welcome to Mi Yodeya, and thanks for bringing your question here! I hope someone finds you the book you're looking for. In the mean time, you might be interested in reading our Q&A post on this topic and posts linked there.
    – Isaac Moses
    Commented Dec 20, 2019 at 15:15
  • Either they did or they didn’t. How can there be more than 2 (3 if you count “we don’t know”) possible answers?
    – Alex
    Commented Dec 21, 2019 at 22:52
  • @Alex Have you never seen a question on this site before? There's always at least a hundred answers to a seemingly simple yes-or-no question which are always in contradiction with each other and all correct.
    – DonielF
    Commented Dec 22, 2019 at 2:33

1 Answer 1


I'm assuming you are looking for the seffer called נר למאה with a subtitle שבת האבות. However his hundred answers are focused on resolving the statement in Yoma 28 Avraham kept all the mitzvahs with the statement in Sanhedrin 58 a non-Jew who keeps Shabbos is punished by death, that along with what he says are many places in Shaas where we find only by Mattan Torah did the Avos stop being classified as a Ben Noach.

It's written by Rabbi Yerachmiel Zeltzer in Brooklyn N.Y. Inside the seffer is a number to call to buy the seffer. 718-851-7819. (I didn't try calling.)

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