That is, some of them channel... For as you have already heard, the function of the Partzufim is to channel the light that originates from Eyn Sof, blessed be He, so that it should be drawn down continually through a chain of cause and effect.
…Kindness and some Judgment. This has already been explained in connection with the mystery of MaH and BaN. The principle that underlies the flow of influence (השפעה, hashpa’ah) is that this flow must be a combination of Kindness and Judgment. There are three reasons for this. The first is that there has to be reward and punishment. The second reason is that the actual flow of sustenance (שפע, shefa) that needs to enter the world on all sides must come with the agreement of these two qualities. Where necessary, Judgment will agree with Kindness, and where necessary, the reverse. This way the government in its entirety extends to all that exists. Any place where it is proper to give sway to the influence of Kindness is within the reach of the influence of Kindness, while any place where it is necessary to give sway to Judgment is within the reach of the power of Judgment. However, both Kindness and Judgment are required to supervise all the details so that in a place where it is necessary to strengthen the one or the other, they will see to it that they do so, whereas in a place where they must agree, they will see to it that they agree.