Whom (o). Grammatical neuter, but "whom" is correct translation. The Father will send the Holy Spirit ( 1 Corinthians 14:16 ; Luke 24:49 ; Acts 2:33 ), but so will the Son ( John 15:26 ; John 16:7 ) as Jesus breathes the Holy Spirit upon the disciples ( John 20:22 ). There is no contradiction in this relation of the Persons in the Trinity (the Procession of the Holy Spirit). Here the Holy Spirit (full title as in Mark 3:29 ; Matthew 12:32 ; Luke 12:10 ) is identified with the Paraclete. He (ekeino). Emphatic demonstrative pronoun and masculine like paraklhto. Shall teach you all things (uma didaxei panta). The Holy Spirit knows "the deep things of God" ( 1 Corinthians 2:10 ) and he is our Teacher in the Dispensation of the Holy Spirit of both new truth (verse 1 Corinthians 25 ) and old. Bring to your remembrance (upomnhsei uma). Future active indicative of upomimnhskw, old verb to remind, to recall, here only in this Gospel (cf. 3 John 1:10 ; 2 Timothy 2:14 ) and with two accusatives (person and thing). After pentecost the disciples will be able better to recall and to understand what Jesus had said (how dull they had been at times) and to be open to new revelations from God (cf. Peter at Joppa and Caesarea).