How does a person receive the Word and what happens when we receive or believe in the Word?

Video Bible Project Segment: https://www.youtube.com/watch?v=Q0BrP8bqj0c&t=3s
Video Reference: Andy Stanley vs Jeff Durbin - Unhitching Christianity from the Old Testament?
https://www.youtube.com/watch?v=yji0fqtVEw8&t=2887s
Conversation: 48:00ff