This post of yours now explains your debating tooth and nail, so to speak, some years back, with you rejecting that the God and Father is the one Holy Spirit, the Spirit of truth = Advocate. As you're trying to make way for and justifying your prophet.
"So the term "another Advocate" who "speaks" must be through the descending of the Holy Spirit into a sinless Being." The Bible in no way supports your claim here.
Rom 5:12 - Therefore, just as through one man sin entered the world, and death through sin, and thus death spread to all men, because all sinned—(Your prophet like all, was deemed a sinner). Heb 1:1 - God, who at various times and in various ways spoke in time past to the fathers in the prophets, According to the above, these prophets were deemed as sinners and yet God spoke "in" them.
The Advocate, the stage or way made by the Son at the taring of the curtain, upon His death, Him effectively being a Proto for us; 1 John 2:27 - But the anointing which you have received from Him abides in you, and you do not need that anyone teach you; but as the same anointing teaches you concerning all things, and is true, and is not a lie, and just as it has taught you, you will abide in Him.
John 6:45 - It is written in the prophets, ‘And they shall all be taught by God.’ Therefore everyone who has heard and learned from the Father comes to Me. Forerunner and alignment - 1 Cor 15:45 - And so it is written, “The first man Adam became a living being.” The last Adam became a spirit life-giving.
"Became Spirit" context - Born again - John 3:6 - That which is born of the flesh is flesh, and that which is born of the Spirit (God & Father) is spirit. Life-giving = Giving the Fathers words - John 17:8 - For I have given to them the words which You have given Me; and they have receivedthem, and have known surely that I came forth from You; and they have believed that You sent Me. Those words - John 6:63 - It is the spirit that quickeneth; the flesh profiteth nothing: the words that I speak unto youare spirit and life. ------------- John 14:17 - the Spirit of truth, whom the world cannot receive, because it neither sees Him nor knows Him; but you know Him, for He dwells with you and will be in you. This verses alignment - 1 Cor 6:16 - And what agreement has the temple of God with idols? For you are the temple of the living God. As God has said: “I will dwell in them And walk among them. I will be their God, And they shall be My people.” 1 Cor 6:19 - Or do you not know that your body is the temple of the Holy Spiritwho isin you, whom you have from God, and you are not your own? = Father, God, Holy Spirit = one in the same dwelling on ones Temple = Advocate - Spirit of Truth.
John 6:45 - It is written in the prophets, ‘And they shall all be taught by God.’ Therefore everyone who has heard and learned from the Father comes to Me. John 16:14 -He shall glorify me: for he shall receive of mine, and shall shewit unto you. (Hmmm, I wonder who it was that the Son asked to glorify him was ). John 14:26 - But the Helper, the Holy Spirit, whom the Father will send in My name, He will teach you all things, and bring to your remembrance all things that I said to you.
Well fancy that, all who get aboard the truth train, will be taught by the God and Father, the helper = the One Holy Spirit, just like the One Spirit the Bible speaks of.
Yep, now God will speak 'in' and through all = Temples, potentially.
And on top of the Father, the Helper/Advocate = John 14:23 - Jesus answered and said to him, “If anyone loves Me, he will keep My word; and My Father will love him, and We will come to him and make Our home with him.
Yep, no need for anymore Prophets sneaking up on the scene required
And for a little more icing on the Cake - John 14:19 - A little while longer and the world will see Me no more, but you will see (perceive) Me. Because I live, you will live also.
Hence, joint teachers = The Word = Father and The Word of God = Son = 'a' Word of God at His Baptism, one of Heb 4:12, titled "The". The hidden manna Rev 2:17 = (John 1:1).......Rev 3:12 (Rev 19:12,13)