Sefer ha-Bahir — Source books

How this book fits

Traditions: Jewish mysticism and Kabbalah
Role in the tradition: Primary source Written from inside the tradition: scripture, revelation, a grimoire, a manifesto or a practical treatise.
Public attention: Major Wikipedia has an article about it in 18 languages.

Read it

Read at sefaria.org ↗ sefaria.org

From Wikipedia

Bahir or Sefer HaBahir is an anonymous mystical work, attributed to a 1st-century rabbinic sage Nehunya ben HaKanah because it begins with the words, "R. Nehunya ben HaKanah said". It is also known as Midrash of Rabbi Nehunya ben HaKanah מִדְרָשׁ רַבִּי נְחוּנְיָא בֶּן הַקָּנָה.

From the Wikipedia article Bahir, revision 1346502399, under CC BY-SA 4.0. Wikidata Q742750: “Anonymous mystical work dealing with Jewish Kabbalah”.

In this study

In the chronology, among the works with no securely known author.

Fragmentary, deliberately obscure, and the earliest place the ten sefirot appear as divine potencies.

Cited for 3 sourced claims here, among them correspondences of Yesod.