2 Corinthians 11:6

And, though I be rude in speech, yet am I not rude in knowledge; but in every way having manifested it toward you in all things.

1 Corinthians 1:17

For Christ sent me not to immerse, but to proclaim the Gospel; not in wisdom of speech, lest the cross of Christ should be made void.

Ephesians 3:4

respecting which ye can, by reading, perceive my understanding in the mystery of Christ,

2 Corinthians 4:2

but we renounced the hidden things of shame, not walking in craftiness, not handling the word of God deceitfully; but, by the manifestation of the truth, commending ourselves to every man's conscience in the sight of God.

2 Corinthians 5:11

Knowing, therefore, the fear of the Lord, we persuade men; but to God we have been made manifest, and I hope that we have been made manifest also in your consciences.

2 Corinthians 12:12

Truly the signs of an apostle were wrought out among you in all patience, by signs and wonders and mighty works.

1 Corinthians 1:21

For, since in the wisdom of God, the world through its wisdom knew not God, God was pleased through the foolishness of preaching to save those who believe;

1 Corinthians 2:1-3

And I, brethren, when I came to you, came not with excellency of speech or of wisdom, proclaiming to you the testimony of God;

1 Corinthians 2:13

Which things also we speak, not in words taught by human wisdom, but in those taught by the Spirit; combining spiritual things with spiritual.

2 Corinthians 7:2

Make room for us; we wronged no one, we corrupted no one, we defrauded no one.

2 Corinthians 10:10

because, "His letters, indeed," says one, "are weighty and strong, but his bodily presence is weak, and his speech contemptible."

2 Peter 3:15-16

And account the long-suffering of our Lord salvation; as our beloved brother Paul also, according to the wisdom given him, wrote to you;

Treasury of Scripture Knowledge

Summary

But though I be rude in speech, yet not in knowledge; but we have been throughly made manifest among you in all things.

General references

Bible References

Rude

2 Corinthians 10:10
because, "His letters, indeed," says one, "are weighty and strong, but his bodily presence is weak, and his speech contemptible."
1 Corinthians 1:17
For Christ sent me not to immerse, but to proclaim the Gospel; not in wisdom of speech, lest the cross of Christ should be made void.
1 Corinthians 2:1
And I, brethren, when I came to you, came not with excellency of speech or of wisdom, proclaiming to you the testimony of God;

But we

2 Corinthians 4:2
but we renounced the hidden things of shame, not walking in craftiness, not handling the word of God deceitfully; but, by the manifestation of the truth, commending ourselves to every man's conscience in the sight of God.
2 Corinthians 5:11
Knowing, therefore, the fear of the Lord, we persuade men; but to God we have been made manifest, and I hope that we have been made manifest also in your consciences.
2 Corinthians 7:2
Make room for us; we wronged no one, we corrupted no one, we defrauded no one.
2 Corinthians 12:12
Truly the signs of an apostle were wrought out among you in all patience, by signs and wonders and mighty works.

General references

2 Corinthians 12:12
Truly the signs of an apostle were wrought out among you in all patience, by signs and wonders and mighty works.