When Jesus tells His disciples He is leaving, He promises them a parakletos. The word carries the weight of several English translations — Comforter, Advocate, Helper — all of them pointing to someone called alongside a person in need. In John 14:16-17 He says the Father will send "another{allos} Parakletos{Comforter}...the Spirit of truth." Then in the next verse, Jesus says, "I will not leave you comfortless: I will come to you." Then in verse 26 He names this Parakletos directly: "the Holy Spirit" — in Greek, pneuma hagion, holy spirit.

Then John writes this in his first letter: "If anyone sins, we have a Parakletos with the Father — Jesus Christ the righteous." ( 1 John 2:1 )

The same Greek word. In John 14:26, Jesus says the Parakletos is the Holy Spirit. In 1 John 2:1, John says the Parakletos is Jesus Christ. That is not a riddle requiring outside theology to solve — Jesus is the Holy Spirit.

Jesus stated eight times in the Gospel of John that He spoke nothing of His own authority — only what the Father commanded:

1. “The Son can do nothing of His own accord” ( Jn5:19 ).
2. “I can do nothing on my own” ( Jn5:30 ).
3. “My teaching is not mine, but His who sent me” ( Jn7:16 ).
4. “he that sent me is true; and the things which I heard from him, these speak I unto the world.” ( Jn8:26 )
5. “I do nothing on my own authority but speak just as the Father taught me” ( Jn8:28 ).
6. “The Father has given me a commandment — what to say and speak” ( Jn12:49 ).
7. “The words I say I do not speak on my own authority” ( Jn14:10 ).
8. “The word you hear is not mine but the Father’s who sent me” ( Jn14:24 ).

And John 12:48 establishes the standard of final judgment: “The word that I have spoken will judge him on the last day.”

We will be judged by the Father’s words, transmitted through the Son. Not by a creed. Not by a council formula developed 300 years after Christ. By the actual words Jesus spoke — which never once mention a single tenant of the trinity.