The Apostle Paul
2 Corinthians 1:4ESV·traditional attribution

who comforts us in all our affliction, so that we may be able to comfort those who are in any affliction, with the comfort with which we ourselves are comforted by God.

John Calvin Reformed @genevareformer

4. That we may be able to comfort There can be no doubt, that, as he had a little before cleared his afflictions from reproach and unfavorable reports, so now he instructs the Corinthians, that his having come off victorious through heavenly consolation was for their sake and with a view to their advantage, that they may stir themselves up to fellowship in suffering, instead of haughtily despising his conflicts.

Matthew Henry Presbyterian @wholebiblehenry

After the foregoing preface, the apostle begins with the narrative of God's goodness to him and his fellow-labourers in their manifold tribulations, which he speaks of by way of thanksgiving to God, and to advance the divine glory (Co2 1:3-6); and it is fit that in all things, and in the first place, God be glorified. Observe, I.

Commenting on 2 Corinthians 1:3-6

John Gill Reformed Baptist @doctorgill

Who comforteth us in all our tribulation,.... The apostle in this verse gives a reason of the former thanksgiving, and at the same time confirms the above character of God, as "the God of all comfort", by his own experience, and that of his fellow ministers; who, though they had been in great tribulation and affliction for the sake of Christ, and his Gospel, yet...