וּשְׁלֹשִׁים יוֹם וּשְׁלֹשֶׁת יָמִים
three and thirty days ... Vayikra 12:4
וְשִׁשִּׁים יוֹם וְשֵׁשֶׁת יָמִים
threescore and six days ... Vayikra 12:5
The time of purification offered by a mother in intercession for a son is three and thirty days. The time of purification offered by a mother in intercession for a daughter is threescore and six days (three and three and sixty days). The difference between these two amounts of time is not only three and thirty days, it is two magical letters lamed.
The Circle of Life
Three is a number of the Goddess. As a female, a daughter is a living incarnation of the Divine Feminine principle. On account of this, through her mother's intercessory period of purification and recovery from childbirth, a daughter enters into an extra three days specifically set aside through which is purified her incarnate connection to the Divine Feminine principle. At her birth, a daughter is already directly connected into to her own Divine Feminine source. Her mother's intercessory time provides space in time for that connection to become purified in a world made with time. This is the reason a woman does not have to undergo brit milah (circumcision in time, in Jewish tradition) to reconnect to the Divine source. A female is born already connected to Her source and to the endless Divine circle of life. The ritual period observed by a daughter's mother purifies the daughter's born connection within the context of spacetime. A female is born a priestess of Goddess. Threescore days are equal to sixty days directly corresponding to the magical letter samech, the creation letter corresponding to ordination and to the endless cycle of life.
The Circle of Light
The two extra magical letters lamed (each with a value of thirty) contained within the time of a mother's intercession on behalf of her son come together to create the number of magical samech (with a value of threescore or sixty), the number of connection into the feminine circle of life and light (sovev kol almin). Through his mother's time of intercessory purification and recovery from childbirth a son becomes encircled and protected by the encircling Divine Feminine Light called sovev kol almin, the encircling encompassing Divine energy which is perceived as universally permeating yet transcendent, supraconscious and elusive by the masculine mind. Thus, the perceptually transcendent Divine Light (as taught by many patriarchal religious teachings) is actually a Light of the Divine Feminine, and while it may be perceived as transcendent by the masculine mind, to the feminine mind, there is no separation in the Light - it is ever whole and complete.
Taken together, the differences between the purification periods observed by a mother for her daughters and sons reflect the fact the a mother is acting as a priestess of the Divine Feminine with these observances. Through the days of a female, a daughter is herself ordained a priestess of the Divine Feminine. Through the days of a male, a son is encircled and protected by the Light of the Divine Feminine.