A.B. Simpson emphasizes the all-sufficiency of God as revealed through the life of Paul, who bequeaths his God to his disciples, assuring them that God will supply all their needs according to His riches in glory by Christ Jesus. Paul exemplifies the transformative power of God, showcasing how even the hardest of hearts can be saved and how believers can attain the highest forms of saintliness through Christ. Simpson highlights that the God of Paul not only strengthens in suffering but also empowers for service, demonstrating that every challenge can be an opportunity for divine work. Ultimately, he calls on believers to embrace Paul's God and utilize His infinite resources for a life of holiness and service.