say they.

2 Corinthians 10:11
Such people should consider that what we are in our letters when absent, we will be in our actions when present.

but.

2 Corinthians 10:1
Now by the mildness and gentleness of Christ, I appeal to you--I, Paul, who am humble when face to face with you, but bold when away.

2 Corinthians 12:5-9
I will boast about such a man, but I will not boast about myself, except in my weaknesses. . . .

1 Corinthians 2:3, 4
I came to you in weakness and fear, and with much trembling. . . .

Galatians 4:13, 14
You know that it was because of an illness that I first preached the gospel to you. . . .

and his.

2 Corinthians 11:6
Although I am not a polished speaker, I am certainly not lacking in knowledge. We have made this clear to you in every way possible.

Exodus 4:10
"Please, Lord, " Moses replied, "I have never been eloquent, neither in the past nor since You have spoken to Your servant, for I am slow of speech and tongue."

Jeremiah 1:6
"Ah, Lord GOD, " I said, "I surely do not know how to speak, for I am only a child!"

1 Corinthians 1:17, 21
For Christ did not send me to baptize, but to preach the gospel, not with eloquent words of wisdom, lest the cross of Christ be emptied of its power. . . .

1 Corinthians 2:1-4
When I came to you, brothers, I did not come with eloquence or wisdom as I proclaimed to you the testimony about God. . . .