John Calvin on 2 Corinthians 7:6

6. Who comforteth the lowly. This is mentioned as a reason; for he means that consolation had been offered to him, because he was borne down with evils, and almost overwhelmed, inasmuch as God is wont to comfort the lowly, that is, those that are cast down. Hence a most profitable doctrine may be inferred — that the more we have been afflicted, so much the greater consolation has been prepared for us by God. Hence, in the epithet here applied to God, there is a choice promise contained, as though he had said, that it is peculiarly the part of God to comfort those that are miserable and are abased to the dust.