Don’t merely listen to the Word, and so deceive yourselves. James 1:22
Everyone has met a Christian that can quote the Bible chapter and verse but seems to be completely unable to put any of what they have memorized to work in their daily life. On the other hand, everyone has also met a Christian who has no idea what John 3:16 says but lives by the teachings of Jesus as perfectly as a flawed human being can.
It is people like these that show what James 1:22 is talking about. It is not enough to simply listen to or read the Word. Knowing what it says it not enough. You must put what it says into practice, or the words on the page are meaningless.