John Gill emphasizes the spiritual peril of hatred towards others, explaining that those who harbor such feelings are enveloped in darkness and are unaware of their spiritual blindness. He illustrates how this darkness leads to a lack of discernment between good and evil, causing individuals to stumble through life without recognizing the dangers that lie ahead. Gill warns that this state of ignorance is a result of sin and the influence of Satan, which blinds the heart and mind, preventing one from understanding the path to peace and salvation through Christ.