 Any one-self theory is hard to square with the New Testament’s theme of the interpersonal relationship between Father and Son. (Layman 2016, 129–30; McCall 2010, 87–8, 2014c, 117–27; Plantinga 1989, 23–7) Any one-self theory is also hard to square with the Son’s role as mediator between God and humankind (Tuggy and Date 2020, 122–3). These teachings arguably assume the Son to be a self, not a mere mode of a self, and to be a different self than his Father. Theories such as Ward’s (section  1.3  above), which make the Son a mere mode, make him something less than a self, whereas others (see section  1.6)  make him a self, but the same self as his Father. Either way, the Son seems not to be qualified either to mediate between God and humankind, or to be a friend of the one he calls “Father”.