Kabbalah zu Bereschit 30:1

"Give me children, or else I die" (Beresheet 30:1). The Shechinah is an offering for the Holy One, blessed be He, which He receives with both the right and the left arm, and with the body. So when (prayer) ascends to (Zeir Anpin), she should be joined with him with all ten Sefirot, because there can be no holiness with fewer than ten people, which is his own holiness. Therefore, when a person wishes his prayer to ascend, he should raise it with all its movement (the notes and vowels). (If the Serpent plans on disrupting the prayer), one should prepare a slingshot against it, and the secret behind the issue lies in Zarka, Makaf, Shofar Holech, Segolta.