So you agree? We can never know anything other than the bare essentials and it doesn’t matter.
No, most things can be known, but many things take diligent study to know.
The things of salvation, The Good News of the Gospel is easy to understand.
That is how the Early church came to understand the scriptures by study.
God gave them the Holy Spirit to help illuminate their minds, but they studied the scriptures diligently to get there.
Even so, like today, there was not total unanimity on all issues. The Roman church has not solved that problem even amoung its own.
We don’t vote, so the question of unanimity is irrelevant. There is a teaching. It is defined. It is in a book called the Catechism.