2 Corinthians 10:8-11 New American Standard Bible (NASB)

8. For even if I boast somewhat further about our authority, which the Lord gave for building you up and not for destroying you, I will not be put to shame,

9. for I do not wish to seem as if I would terrify you by my letters.

10. For they say, "His letters are weighty and strong, but his personal presence is unimpressive and his speech contemptible."

11. Let such a person consider this, that what we are in word by letters when absent, such persons we are also in deed when present.

2 Corinthians 10