A.B. Simpson emphasizes the importance of glorifying in one's weaknesses and sufferings, as exemplified by the Apostle Paul in 2 Corinthians. Paul asserts his authority and defends his ministry against critics, highlighting his privilege of preaching the Gospel freely, enduring hardships, and receiving divine revelations. He finds strength in his infirmities, recognizing that God's grace is sufficient and that trials can lead to spiritual growth and deeper reliance on Christ. Simpson calls for a revival of the spirit of sacrifice and a commitment to the mission of spreading the Gospel, even in the face of adversity.