A.B. Simpson emphasizes the dependableness of God, asserting that all of God's promises are fulfilled in Christ, who is the ultimate assurance of our faith. He addresses the criticism faced by the Apostle Paul regarding his reliability, clarifying that God's word is steadfast and trustworthy, unlike human promises. Simpson illustrates that God's promises encompass every aspect of life, providing reassurance and security through the Holy Spirit, who seals and anoints believers. He encourages the congregation to recognize the stability of God's grace and the eternal nature of His promises, which are guaranteed through Christ. Ultimately, Simpson calls for believers to trust in God's dependability and to share this assurance with others.