In the seventeenth century, the Jewish mystical tradition which is known as Kabbalah was integrated into the curriculum of studying the Hebrew Bible and the Talmud. Kabbalah became popular in these times in the wake of the dissemination of Isaac Luria's teachings, in particular within the Jewish communities in Prague and Amsterdam, where members of the Horowitz family took a leading role. Kabbalistic psychology was applied to the whole Jewish lifestyle then, and to the understanding of Jewish tradition. Kabbalistic intentions of prayer intensified the expectation of redemption, and during the messianic movement initiated by Shabtai Zvi, the kabbalistic meaning of repentance was also adapted in prayer books composed for so-called Conversos, who had to familiarize themselves with Jewish tradition. The article exemplifies this process by a Spanish anthology of prayers, "Libro entitulado ensenha à pecadores," and shows the historical impact of Kabbalah in the field of Jewish education.