sefirah

noun2

1. •
   Each of the ten attributes that God created, through which he can project himself to the universe and man.

   • The kabbalists also called the first sefirah, the dark flame that started the revelatory/creative process, "Nothing", because it did not correspond to any reality that we could conceive. — 2007
2. •
   (Judaism) The counting of the Omer, that is, the period of 49 days between Passover and Shavuot.