“The Book Bahir, the first work of the kabbalah, is the earliest source we have that might imagine the shekhinah as a feminine power … She is described as wife, bride, and daughter of the masculine power … The Zohar, and other kabbalistic works from the end of the thirteenth century and the beginning of the fourteenth, made the myth of the feminine shekhinah a central element in their descriptions of the divine world, made her the purpose of rituals and religious experiences, and established this as one of the most prominent components of the kabbalistic worldview.”
“Gershom Scholem regarded the concept of the feminine shekhinah in the Book Bahir as the appearance of a gnostic concept within the early kabbalah. It could be regarded as an ancient Jewish gnostic concept that surfaced in the kabbalah in the Middle Ages after being transmitted in secret for many centuries, or the result of the influence of Christian Gnosticism, which emphasized the role of feminine powers in the divine world.
“… The femininity of the shekhinah is the result of the influence of the intense Christian worship of the Madonna, the Mother of Christ, that peaked in the twelfth century.”
–Joseph Dan, Kabbalah: A Very Short Introduction, 2006, pp. 48.