I'm not convinced that even the most mature and holy saint will understand every jot and tittle of scripture correctly. I believe their testimonies, but consider that their doctrines always need to be examined/ tested. Unless there is a point at which growing and learning ever ceases in this life.
Amen.
Just recently (at the age of 76, image that) I became aware of the depth of 2 sins in my Christian life, I cried and repented. What more is there? I wonder.