Una verdadera enciclopedia de los nombres sagrados y de la sabiduría de las Sefirot, Las Puertas de la Luz (Shaarei Orah) son un libro básico para entrar en el estudio de la Torah utilizando las técnicas de los cabalistas. Al principio de su libro, Iosef Gikatilla nos explica que toda la Torah está tejida por el nombre del Eterno, y que «aquel que comprende los sentidos de todos los nombres sagrados y de aquellos que están ligados con ellos y cada una de sus denominaciones, descubrirá que todo depende de su gran nombre bendito, y aspirará a ligarse a él y a temerlo ». Dividido en diez Puertas, cada una de ellas precedida por un salmo, este libro extraordinario y sistemático nos brinda una exposición de los nombres de Dios asociándolos a las diez Sefirot. Gikatilla, Joseph ben Abraham. Medinaceli (Soria), 1248 - Peñafiel (Valladolid), 1325. Kabbalist, exegete. Although born in Medinaceli, his longest residence was in Segovia. Between 1272 and 1274 he was a disciple of Abraham Abulafia, being greatly influenced by his prophetic tendencies, in such a way that the latter came to consider him a continuator of his school. Gikatilla was a prolific writer; he wrote his first work when he was only twenty-six years old, the Ginnat 'egoz. It is a kabbalistic treatise structured in three parts. As a kabbalist, Gikatilla dealt with mystical combinations and transpositions of letters and numbers, as is reflected in his extensive work. Gikatilla was not an adversary of Philosophy, quite the contrary; he tried to reconcile Philosophy and Kabbalah. But, undoubtedly, his great work is centered on mysticism.