2 Corinthians 10:1-2, 10-11

I, Paul, myself entreat you, by the meekness and gentleness of Christ—I who am humble when face to face with you, but bold toward you when I am away!— I beg of you that when I am present I may not have to show boldness with such confidence as I count on showing against some who suspect us of walking according to the flesh.

For they say, “His letters are weighty and strong, but his bodily presence is weak, and his speech of no account.” Let such a person understand that what we say by letter when absent, we do when present.