You must Believe the Word Of God acknowledging that it is True.
Hearing, believing, receiving and doing the Word of the Lord is the expectation of the Lord for each of us. When we do so we enter into everlasting life. We are forever delivered from condemnation.
You must Receive the Word Of God. Believing something is not the same as allowing it to become a part of you, allowing it to change you. For instance, you may believe that eating healthy is the right thing to do, but continue bad eating habits. When you receive something that is true you begin to live by it.
You must Do the Word Of God. Doing is proof that you have believed and received Truth.
Self-deception occurs when we mentally agree to something but deny it in our heart. The proof of faith is what we do. Jam 2:17