the pillar and bulwark of the Truth
Why did you capitalize “Truth” here, yet you probably don’t capitalize “Way” in Matthew 7:13 or “Life” in Luke 16:25? To capitalize “Truth” here is unjustified (even false).
the Church holds up Christ
How is the Lord supposed to be kept from falling by the Church who is inferior to him?
Scripture is not the primary authority of the Church, Christ is.
Hmm.
If a king infallible in every way writes an infallible letter and seals it with the Royal Seal and sends it out across his kingdom on the legion of Royal Horses that are only used for distributing infallible letters, then which has more authority: the king, or the letter?
Well, the letter cannot possibly go against the king’s will and desire and be right, since the king is infallible in every way. So the king must surely be in authority over the letter.
But wait, the king cannot possibly go against the letter, since the letter is infallible. So the letter must surely be in authority over the king.
But wait, the letter cannot possibly go against the king, since to go against the king is wrong and the letter is right. So the king must surely be in authority over the letter.
But wait, the king cannot possibly alter the letter, since to change what’s right is wrong and the king cannot do what’s wrong. So the letter must surely be in authority over the king.
Whatever the case, the Church remains under the authority of scripture, especially since there is no tension between the Father, the Holy Spirit, Christ, and the scripture.
Note: the king and the letter is real. Notice how God’s own oath (which is itself only a subset of scripture) is binding on God in Hebrews 6:13-18.
Submission of the Church to Scripture can not be established by the speech of the Holy Spirit.
You yourself said the writings you call scripture are the speech of the Holy Spirit. And 1 Timothy 3:15 is in your scripture. And it says that the Church ought to conduct itself in accord with Paul’s letter. And Paul’s letter is in your scripture.
Therefore submission of the Church to scripture is established by the speech of the Holy Spirit.