The Jewish mystical doctrine known as "Kabbalah" (="Tradition") is distinguished by
its theory of ten creative forces that intervene between the infinite, unknowable God ("Ein Sof") and
our created world. Through these powers God created and rules the universe, and it is by influencing
them that humans cause God to send to Earth forces of compassion (masculine, right side) or severe
judgment (feminine, left side). You can learn about the individual Sefirot by reading here.