2 Corinthians 10:10

For, His letters, they say, are weighty and strong; but his bodily presence is weak, and his speech of no account.

They say ... proves that Paul had in mind a number of false teachers, not merely "the ring leader" postulated by the critics. And as for their slander, it is precarious indeed to put any confidence in it. No man who knows the biography can suppose for an instant that his bodily presence was "weak" in any sense, or that he lacked power as a public speaker. Their lies to the contrary should be rejected.