 Like Swinburne (see section  2.3)  Craig argues that it is impossible for God to be a single Person because “if God is perfectly loving by his very nature, he must [eternally] be giving himself in love to another” (593). And since God is free not to create, but must be loving another, “the other to whom God’s love is necessarily directed must be internal to God himself” (ibid.). For Craig this is a plausibility argument rather than a strict proof, in support of the claim that the concept of unipersonal God is incoherent. Unlike Swinburne, he does not seem to think that this argument is important to reasonable belief in the Trinity (Craig believes the Trinity can somehow be derived from the Bible–on which see section 5.4), nor does Craig mount a philosophical argument for why there must be exactly three divine Persons.