2 Corinthians 3:14

3:14 But their minds were closed. For to this very day, the same veil remains when they hear the old covenant read. It has not been removed because only in Christ is it taken away.

2 Corinthians 7:7-8

7:7 We were encouraged not only by his arrival, but also by the encouragement you gave him, as he reported to us your longing, your mourning, your deep concern for me, so that I rejoiced more than ever. 7:8 For even if I made you sad by my letter, I do not regret having written it (even though I did regret it, for I see that my letter made you sad, though only for a short time).