David Wilkerson emphasizes the call for Christians to embody mercy, drawing parallels between God's mercy towards Lot and the mercy we are to extend to others, including our enemies. He reflects on the story of Sodom and Gomorrah, highlighting that Lot's salvation was not due to his morality but solely because of God's mercy. Wilkerson warns that, like Lot, the righteous remnant today exists in a society facing judgment, and it is only through the grace of Jesus that believers are saved. He urges the church to recognize their position as recipients of divine mercy and to reflect that mercy in their interactions with others.