Jamieson, Fausset and Brown on John 14:25-26

25-26. he shall teach you all things, and bring all to ... remembrance, whatsoever I have said unto you--(See on Joh 14:15; Joh 14:17). As the Son came in the Father's name, so the Father shall send the Spirit in My name, says Jesus, that is, with like divine power and authority to reproduce in their souls what Christ taught them, "bringing to living consciousness what lay like slumbering germs in their minds" [Olshausen]. On this rests the credibility and ultimate divine authority of THE Gospel history. The whole of what is here said of THE Spirit is decisive of His divine personality. "He who can regard all the personal expressions, applied to the Spirit in these three chapters ('teaching,' 'reminding,' 'testifying,' 'coming,' 'convincing,' 'guiding,' 'speaking,' 'hearing,' 'prophesying,' 'taking') as being no other than a long drawn-out figure, deserves not to be recognized even as an interpreter of intelligible words, much less an expositor of Holy Scripture" [Stier].