Thank you but one verse to support your view of the authority of teachers over anyone but students of the letter of the law compared against multiple applications of verses from the old and new testaments of moving on to maturity and becoming teachers themselves into the new spirit of the law where the True Teacher is does not proof make. Tutorship in the meaning of the substance thru teachings of the shadow w/o a move toward the substance away from the shadow is just staying in law w/o a move to grace. ( The very thing that Hebrews is warning against )
Proving the Faith of Christ is almost oxymoronic, yet the proof is within one's soul and heart, within one's very body... It can never be proven to another, but it CAN be discipled...
The question is: What IS Salvation? eg - What IS the Marriage of the Lamb? eg What IS knowing Christ that IS Life Eternal?
And the answer is UNION with God...
And for this cause Christ gave the discipling of the Nations to His Apostles whom He hd discipled... And this, if I am understanding you aright, you are reducing to "the authority of teachers"? Indeed, in the Ancient Faith, it had (and has) nothing to do with the authority of the teacher and everything with the penitent seeking direction from one who has knowledge by having walked the talk of discipleship as authored by Christ... Union with Christ comes through obedience to Christ, which is discipled by willful denial of self and the taking up of one's own cross... Tutorship in meanings is not self denial... Paul knew only Christ, and Him crucified... That was his discipling... He showed how the Life in Christ is to be lived and told his disciples to imitate him as he is imitating Christ...
Now the Marriage of the Lamb in a person is through his obedience to Christ through his denial of self and his entry into suffering on the narrow and straited Way... Indeed, the original early Christians called themselves the "Followers of the Way"... It was not until Paul discipled the followers of Christ that winter in Antioch that they first began to call themselves Christians... The taking up of one's cross is the Way of Suffering, and Paul preached this as looking to Christ, and Him Crucified, and we following Him...
The preaching of Christ Crucified is the preaching of suffering, and is well known as askesis, the living of an ascetic life of self denial... These days nobody wants to suffer - We are like young millennials who all want a job and a paycheck, but don't want to have to have to work all that much, or even show up on time... The Way of Christ is a God-Quest of suffering for our Lord... It is arduous and kind and loving and worthwhile... It takes a long time, and many fail, for the cost of discipleship is not cheap... It is a contest against demonic powers and principalities day after day after day, and the Church is the Hospital that administers the cures with the medicines of immortality which comprise repentance - It is a discipling of askesis and self denial... As David writes:
Psalm 132:4
I will not give sleep to mine eyes, nor slumber to mine eyelids...
And why this? Until i find a place (within me) for the Lord my God...
If one does not understand Christianity as a God-Quest, one does not understand Christianity...
Arsenios