The speaker was brought up as a Roman Catholic Christian but at some point in his adult life he became a Buddhist. He talks about how he understands God's is important to other people but he cannot accept God as the 'final authority' which is what this commandment demands.
Hold a discussion about the role God plays in their lives, or in the lives of believers. Those who don't believe in God could discuss if there is an aspect or idea that fills this role for them. They could also discuss the influence of Christian beliefs on public and private life in the UK, even among non-Christians.