What does it mean to have a 'BC' before becoming a Christian?

The 'BC' concept refers to the time in a believer's life before they encountered the gospel and recognized their need for Christ. As shared in the sermon, every true Christian has a life before being transformed by the grace of God, illustrating the profound change that occurs when one becomes a disciple of Christ. This acknowledgment reinforces the understanding of human sinfulness and the necessity of divine intervention for salvation, finding its roots in texts like Ephesians 2:1-5, where Paul speaks of being 'dead in trespasses and sins' before being quickened by Christ.