Brylla D. Jewish Devekut in the Form of Contemplation of the Tetragram and Letter Combination as a Way of Spiritual Development. 10.14746/pst [Internet]. 2010 Dec. 1 [cited 2024 Sep. 27];24:23-39. Available from: https://pressto.amu.edu.pl/index.php/pst/article/view/11524