Jesus and the Apostles all taught without the Bible existing.
Paul did write to communities, but in his letters he tells them to keep to what he previously taught them, without reference to the Bible.
That document that we attribute to Paul existed with hundreds of other documents (see
www.earlychristianwritings.com for a partial list). Up until the 300s no bible existed.
The Christian church existed, and spread without the Bible. They used the existing gospels, as well as the Epistles of Clement, Ignatius and others.
In the face of growing heresy the church decided to make on compilation of documents which we now call the Bible.
The Gospels and Epistles didn't 'authorise themselves' for even books such as the Acts of Peter claim to be genuine.
The church tested these book against what they always had taught; tradition.
The Holy Spirit saw fit to work within this non-Biblical church to help guide these bishops, deacons and priests in choosing those books.
Then they compiled the Bible
The Church created the Bible.
Protestants have to ignore everything that happened for 300 or so years and pretend that the Bible authorises itself. Or, they accept that the holy spirit worked with a church to compile the bible but ignore the fact that that same church believed the bread and wine to be the body and the blood of Christ, and that it lived a full liturgical life.
They ignore this because it sure beats explaining why the Holy Spirit worked with an 'apostate' church!
