Samuel Logan Brengle emphasizes the importance of accurately representing God's character, warning against the extremes of portraying God solely as merciful or as cruel. He argues that a true understanding of God encompasses both His mercy and severity, as revealed in Scripture. Misrepresentations can lead to false hopes or despair, and it is crucial to recognize that God's love calls for repentance and obedience. Brengle highlights that the Bible provides the authoritative representation of God, balancing His goodness with His judgments. Ultimately, he concludes that true mercy is found in Jesus Christ, who offers salvation to those who trust and obey.