2 Corinthians 4:1

The apostle had, in the foregoing chapter, been magnifying his office, upon the consideration of the excellency or glory of that gospel about which he did officiate; and now in this chapter his design is to vindicate their ministry from the accusation of false teachers, who charged them as deceitful workers, or endeavoured to prejudice the minds of the people against them on account of their sufferings. He tells them, therefore, how they believed, and how they showed their value for their office as ministers of the gospel. They were not puffed up with pride, but spurred on to great diligence: "Seeing we have this ministry, are so much distinguished and dignified, we do not take state upon ourselves, nor indulge in idleness, but are excited to the better performance of our duty." I. Two things in general we have an account of: - Their constancy and sincerity in their work and labour, concerning which observe, 1. Their constancy and perseverance in their work are declared: "We faint not (Co2 4:1) under the difficulty of our work, nor do we desist from our labour." And this their stedfastness was owing to the mercy of God. From the same mercy and grace from which they received the apostleship (Rom 1:5), they received strength to persevere in the work of that office.

— Matthew Henry's Concise Commentary (public domain)