the books were in existence, as were many others that claimed to be Scripture. it took the Church, inspired by the Holy Spirit, to seperate the wheat from the chaff.
notice the Codex was found in an Orthodox Church, not a Baptist Church. wonder why that was?
at least Luther knew how the Canon was decided and who copied and preserved the Scriptures for 16 centuries before the printing press was invented.
God uses even evil people for His glorification and plan.
Do you really wonder???