I'm shocked! Shocked I tell you!. But Paul wrote:
Galatians 1:8 But though we, or an angel from heaven, preach any other gospel unto you than that which we have preached unto you, let him be accursed.
Do you have any infallible source that shows the apostles taught exactly what the Catholic Church teaches other than scripture?
Yes, the Gospels try Jn. 21:25.
“But there are also many other things which Jesus did; which, if they were written every one, the world itself, I think, would not be able to contain the books that should be written.”
Still shocked? The early Church fathers spent hundreds of years assembling what they infallibly pronounced under Petrine authority to be the true written word of God by cross-checking with the sacred and received oral tradition of the time of God’s unwritten but spoken Word.
Maybe Protestant ought to try getting a different Bible than what was authoritative assembled in the Synod of Rome in AD 382. Perhaps the “Thomas Jefferson Bible”?