Indeed the intrinsic function of Israel Sabba-Tevunah is to enable the Mental Powers to extend until they reach their place. (Israel Sabba-Tevunah are not qualitatively different Partzufim from those of Abba and Imma; rather, they are an extension of Abba and Imma on a lower level.) Thus we see that sometimes the Mental Powers may be given by the root itself and sometimes by the extension of the root – i.e. sometimes by Abba and Imma (in the Second Maturity) and sometimes by Israel Sabba-Tevunah (in the First Maturity). These are two different levels of Mental Powers. Thus the proposition goes on to say: