2 Corinthians 10:8-10

Young's Literal Translation

⁸ for even if also anything more abundantly I shall boast concerning our authority, that the Lord gave us for building up, and not for casting you down, I shall not be ashamed;

⁹ that I may not seem as if I would terrify you through the letters,

¹⁰ `because the letters indeed -- saith one -- [are] weighty and strong, and the bodily presence weak, and the speech despicable.'