You can't even show that the highest praise of non-divine authorities goes to the Scripture. The Apostles, the Church itself, and even the elders of the Church get higher praises in Scripture than the Scripture gives itself. The Church is described as the Pillar and Ground of the Truth, which is a very definitively higher statement of authority than"Profitable" or even "pure".
However, Sola Scriptura, as practiced by the majority of Protestants, was completely impossible in the early Church, where they couldn't just pick up their bibles.
The point he is attempting to make is that NO MATTER WHAT YOU DO, you put one tradition or another above Scripture. The method of interpreting Scripture is a tradition you place in authority over Scripture. Your systematic theologies are just a fancy name for a tradition you place OVER Scripture. The reason is that when Scripture contradicts whichever theology you have, you create a rationalization around it to try to explain it away.
You have some very harsh words for the Scripture. I don't believe you are in the right here, you seem to have a love for tradition which is strong enough to obstruct the major truths of the Scripture itself. Look at just a few passages:
John 17:17:
17
Sanctify them by the truth;
your word is truth.
Romans 10:17:
Consequently, faith comes from hearing the message, and the message is heard through the word about Christ.
Ephesians 2:7-9:
in order that in the coming ages he might show the incomparable riches of his grace, expressed in his kindness to us in Christ Jesus. 8 For it is by
grace you have been saved, through faith—and this is not from yourselves, it is the gift of God— 9 not by works, so that no one can boast.
III John 1:12:
Demetrius is well spoken of by everyone—and even by
the truth itself. We also speak well of him,
and you know that our testimony is true.
II Peter 3:16:
He writes
the same way in all his letters, speaking in them of these matters. His letters contain some things that are hard to understand, which ignorant and unstable people distort, as they do
the other Scriptures, to their own destruction.
Luke 16:16:
“The Law and the Prophets were proclaimed
until John. Since that time,
the good news of the kingdom of God is being preached, and everyone is forcing their way into it.
As has already been mentioned Revelation says not to add or subtract from His word and Proverbs says not to add. Jesus denounced the Pharisees for the many traditions they put on the backs of His people saying they hindered them from entering heaven...they themselves were not entering Jesus said and they hindered others. He also pointed out that in some cases they set aside God's Word in favor of their traditions.
The letters written by imposters...which Paul himself warns of time and again...were identified. The letters cannonized were those most widely used and practiced.
If you have no Sola Scriptura, you are lost...where are your spiritual eyes??? Anything goes. Furthermore
II Thessalonians 2:1-12 speaks of the lawless one who will set himself up in God's holy temple proclaiming himself to be God...you must have God's Word as your greatest law impressed upon your heart...this picture is clearly painted for us. The Holy Spirit guides us through God's Word and gives us insight and wisdom into that Word and teaches us how to conduct ourselves and even more importantly to distinguish the spirits.
I could go on, but will end here.
