How do people from different backgrounds become trophies of God's grace?

Les teaches that he has seen many people from various backgrounds and lifestyles come to be what Scripture calls living epistles—trophies of God's grace—not because of anything Les did, but only because they saw what Ephesians chapter 1 says. In Ephesians 1:12–13, Paul writes that believers are to the praise of His glory, we who first trusted in Christ, in whom you also trusted after you heard the Word of Truth, the Gospel: that Christ died, was buried, and rose from the dead. Paul writes to the believer, not to a lost person. After hearing the Gospel, considering it, and being old enough to understand that they are sinners and that Christ is the remedy, they believed. Les points out that this passage says nothing about church membership, though he is not against the local church.