2 Corinthians 10:9-11

New Revised Standard Version, Anglicised

⁹ I do not want to seem as though I am trying to frighten you with my letters. ¹⁰ For they say, ‘His letters are weighty and strong, but his bodily presence is weak, and his speech contemptible.’ ¹¹ Let such people understand that what we say by letter when absent, we will also do when present.