Thomas Brooks emphasizes the stark contrast between the holiness of heaven and the unholiness of sinful people, using vivid animal imagery to describe the nature of the unholy. He argues that just as various creatures symbolize different sinful behaviors, God has decreed that no unclean beings will enter His holy presence. Brooks asserts that heaven is a place reserved for the holy, and the presence of unholy individuals would be intolerable for the righteous. He concludes that the purity of heaven necessitates the exclusion of all who practice sin, reinforcing the idea that the eternal city is not meant for those with beastly spirits or practices.

Harriet N. Cook uses the analogy of wolves to illustrate the wild, savage, and cruel nature of sin and wickedness in the world. She draws parallels between the behavior of wolves, their hunger for prey, and the destructive tendencies of evil in humanity. Cook also highlights the transformation that is prophesied in the Bible, where the wicked and cruel shall become holy and Christ-like, leading to a peaceful coexistence symbolized by 'The wolf shall feed with the lamb.' This sermon serves as a reminder of the power of redemption and the ultimate restoration of harmony and peace in God's kingdom.