I came across a book by Stephen Mitchell called Jesus, What He Really Said and Did. In the introduction, he describes himself as a Jewish man who has a great love for Jesus Christ.
He referenced the Jefferson Bible, which is a New Testament Thomas Jefferson wrote of what Jesus truly said and excluded what Jefferson felt were writers putting words into Jesus’ mouth.
He also said that verses such as Mark 16:16, “Whoever believes and is baptized will be saved, but whoever doesn’t believed will be damned,” were added by a Christian writer in the 2nd century.
Does the RCC recognize/condemn the Jefferson Bible, and are there parts of the New Testament that may have been added by others later? Either way, it doesn’t affect my belief in Jesus Christ, but I was curious if this is in line with Catholic teaching, or if the guy is writing a book of misinformation.