From the time of the apostles until the present, the true church has always believed that the Bible is complete. God has given His revelation and now Scripture is finished. God has spoken. What He gave is complete, efficacious, sufficient, inerrant, infallible, and authoritative. Attempts to add to the Bible, and claims of further revelation from God have always been characteristic of heretics and cultists, not the true people of God.
John MacArthur