"Orchot Tushiya": These are the paths that the angel Ezekiel conveyed to our forefather Abraham as part of the covenant traditions. They are cited in the book "HaPliyah", in the introduction to Rabbi Abraham ben David's (RABaD) commentary on the "Sefer Yetzirah (the World of Formation)", and in the "Shoshan Sodot" book authored by a student of the Ramban (Nahmanides), as mentioned in the writings of Rabbi Isaac Luria (the Arizal) and in the "Sefer HaKanah". They represent the fifty gates of understanding and their names (see "Rav Pe'alim" 38).