Samuel Logan Brengle emphasizes the divine command to 'speak evil of no man' as outlined in Titus 3:2, warning that failing to adhere to this command leads to numerous spiritual evils, including backsliding and the quenching of revivals. He defines evil-speaking as lying, slandering, and gossiping about others, which not only harms the individual being spoken about but also corrupts the speaker's own soul and grieves the Holy Spirit. Brengle urges believers to consider the struggles of others, reflect on their own faults, and embody Christ-like love and compassion instead of judgment. He concludes that true love and a clean heart filled with the Holy Spirit will prevent one from speaking evil and instead inspire prayer and correction in love. The sermon calls for self-examination and a commitment to uphold the dignity of every person, as all are precious in God's sight.