Bible: "... not the smallest letter, not the least stroke of a pen, will by any means disappear from the Law until everything is accomplished." (Matthew 5:18)
Bible: "Heaven and earth will pass away, but my words will never pass away." (Mark 13:31)
If every Bible in the world was suddenly reduced to ash, every manuscript as well so we had no copies of any scripture in any form, would it then be OK to murder, rape and steal?
No. God’s laws exist independent of the paper and ink they are recorded on, so having some scriptures go missing (Oh, like for example: book of the Wars of the Lord (Num. 21: 14)
book of Jasher (Josh. 10: 13; 2 Sam. 1: 18)
book of the acts of Solomon (1 Kgs. 11: 41)
book of Samuel the seer (1 Chr. 29: 29)
book of Gad the seer (1 Chr. 29: 29)
book of Nathan the prophet (1 Chr. 29: 29; 2 Chr. 9: 29); prophecy of Ahijah (2 Chr. 9: 29)
visions of Iddo the seer (2 Chr. 9: 29; 2 Chr. 12: 15; 2 Chr. 13: 22)
book of Shemaiah (2 Chr. 12: 15)
book of Jehu (2 Chr. 20: 34)
sayings of the seers (2 Chr. 33: 19)
an epistle of Paul to the Corinthians, earlier than our present 1 Corinthians (1 Cor. 5: 9)
possibly an earlier epistle to the Ephesians (Eph. 3: 3)
an epistle to the Church at Laodicea (Col. 4: 16)
and some prophecies of Enoch, known to Jude (Jude 1: 14) )
has nothing to do with the durability of the Law and commandments.