The Importance of Knowing the Bible

We need to hide God's word inside of our heart so that we don't sin against them and we do sin. We prepare messages for the masses, but those messages aren't back for us. These are Christians who asked Jesus to come into the heart who received Christ as their Savior. At what point is just a step above where they're no longer forgiven? I think more Christians watch would be golder than John MacArthur.