No one *church* has been given authority. There’s no need for it.
What would any church or denomination need authority for?
The *need* is to settle these kind of arguments and to determine - with authority - whose version of what scripture says is correct according the teaching of Christ through His Apostles. For one Lord, one faith, one baptism.
My point here is that sola scriptura fails in practice. It is also not scriptural.
I suspect that this is one reason Christ established His Church and gave it authority: to prevent such as this. But for whatever reason, whether need or otherwise, this is what He clearly did.