Not sure how we could justify the above? Scripture is crystal clear.
Firstly God is not a man:
Numbers 23:19 I AM NOT A MANI am not a man that I would sin nor the son of man that I would repent.
Hosea 11:9 I will not destroy Ephraim, FOR I AM GOD AND NOT A MAN…for I am God and not a man…
So God is definitely not a person.
Secondly, The Holy Spirit is NEVERnever defined as a person. In 385 occurrences G4151 is NEVERnever translated as a person, human being, etc. G4151 translates as current of air, breath.
So short answer, In John 14:26 only 1 person is mentioned, our brother & God’s Lamb.