Forces opposite to the Creator become revealed in creation. Creation attains and feels everything through opposites, which is described by the verse, “The advantage of the Light is attained from darkness.”
Creation adds to and places itself before the forces that become revealed in it while going through 125 degrees or states on the path to the Creator. This entire process is actualized by the Upper Force, the Creator. Thus, along the levels of ascent, creation gradually attains the fact that the forces of judgment, collision, and opposition were given to it so it would acquire independence and recognize the initial point. Then creation introduces all of its own qualities to that point, increasing it by 620 times, while at the same time making it become the point of unity and adhesion with the Creator.
On the path to this, creation discovers that it differs from the Creator. The Creator’s forces seem opposite to it, as forces of judgment. However, later creation reveals that all of these states came from mercy so it would feel perfection through its independence. It turns out that all of the opposite states, the entire egoistic desire that rises up against the Creator, against the force of bestowal, must only be used correctly.
Then creation sees how judgment turns to mercy and realizes that from the Creator’s end there was never a single thought or action besides absolute love.
From the 1st part of the Daily Kabbalah Lesson 1/12/11, Writings of Rabash