Part 3: Nevertheless, the Unlimited acts only in accordance with what is rooted in the Residue. Even though we have said that the source of the government is Eyn Sof, blessed be He, in His intrinsic perfection, He has already decreed that this action should reach the lower realms and creatures only within the limited order constituted by the Residue. The goal is to attain perfection, and the truth is that the action itself is perfect, for all is good, as it says, “All that the Merciful One does is for good” (Berachot 60b) and “I will give thanks to You, O God, for You were angry with me” (Isaiah 12:1).
But in the lower realms the perfection is concealed, and nothing reaches them except as permitted by the law of concealment. However, the law of concealment was brought about by His perfection, and thus it goes in one direction in such a way that it certainly comes to complete perfection, as discussed above.