Paul was soaked in the scriptures. He quotes the Old Testament throughout his letters. He knew the Word of God. But when aged and shut-up in prison, he writes of his one longing, "That I might know him..." And in his last letter to his preacher boy, Timothy, he pens these words: "I know whom I have believed..." That is, "I know the God of the Book," (not just the Book of God).
It is necessary to to know the latter, but imperative to know the former. I believe many a saint has gone to their grave knowing the Word of God who never got to know the God of the Word. To some, the Bible remains a novelty Book, so to speak, to the end; they're still searching for "little nuggets" to the last breath, never really knowing the owner of the the rich gold mine they've been digging in all those many years.
The one purpose of both the Written and Living Word is to reveal the Eternal Word: GOD!