The Holy Spirit affirms Christ.
Jesus Christ is our final prophet, priest, and king.
Do you want to surplant him with a fallible old man? I certainly don’t.
The writer to the book of Hebrews is writing to Jewish believers and He is pointing out to them that they do not need to succumb to the temptation to go back to the Mosaic economy. They do not need to surrender to that temptation to go back to the old Judaistic religion. But now we have Christ, and He is the full and final word from God. There’s no need to go back to anything else.
And Christ is at the head of His Church. Of course we have Christ. We also have Prophets and Apostles,just as the New Testament outlines. Your assumptions remain just that.
Please explain this in light of Scriptures that speak otherwise:
Ephesians 4:
11 And he gave some, apostles; and some, prophets;and some, Evangelists; and some, pastors and teachers;
12 For the perfecting of the saints, for the work of the ministry, for the edifying of the body of Christ:
Ephesians 2:
20 And are built upon the foundation of the apostles and prophets, Jesus Christ himself being the chief corner stone;
If our foundation is supposed to be prophets and apostles, and Christ is the Chief Cornerstone of that foundation, why then is Christ your final prophet? Where is the rest of your foundation? His prophets and Apostles keep His doctrine sure, and His teachings solid. Otherwise, the house crumbles and we are left with 30 thousand plus different Christian churches all teaching deferent things.
Surely the Lord God will do nothing, save he reveal his secret to his servants, the prophets. Amos 3:7