Paul's second letter to the church in Corinth provides a poignant glimpse into the persecution he was enduring for the sake of spreading the Gospel. Throughout the letter, Paul fervently encourages the church to stand firm and unwavering in their faith, especially in the face of adversity. Additionally, he candidly discusses his own struggles, referring to a "thorn in the flesh" that served as a constant reminder of his need for reliance on God.