1 Corinthians 1:17

For Christ did not send me to baptize, but to proclaim the gospel, not with {clever speech}, lest the cross of Christ be emptied.

1 Corinthians 2:1

And I, [when I] came to you, brothers, did not come with superiority of speech or of wisdom, proclaiming to you the testimony of God.

1 Corinthians 2:13

[things] which we also speak, not in words taught by human wisdom, but in [words] taught by the Spirit, explaining spiritual [things] to spiritual [people].

John 4:2

(although Jesus himself was not baptizing, but his disciples),

2 Corinthians 10:10

because it is said, "His letters [are] severe and powerful, but his bodily presence [is] weak and his speech is of no account."

Acts 10:48

So he ordered [that] they be baptized in the name of Jesus Christ. Then they asked him to stay for several days.

2 Peter 1:16

For we did not make known to you the power and coming of our Lord Jesus Christ [by] following ingeniously concocted myths, but [by] being eyewitnesses of that one's majesty.

Acts 26:17-18

rescuing you from the people and from the Gentiles to whom I am sending you,

1 Corinthians 2:4-5

and my speech and my preaching [were] not with the persuasiveness of wisdom, but with a demonstration of the Spirit and power,

2 Corinthians 4:2

but we have renounced shameful hidden things, not behaving with craftiness or adulterating the word of God, but with the open proclamation of the truth commending ourselves to every person's conscience before God.

2 Corinthians 10:3-4

For [although we] are living in the flesh, we do not wage war according to the flesh,

2 Corinthians 11:6

But even if [I am] unskilled in speech, yet [I am] not in knowledge; certainly in everything [we] have made this clear to you in every [way].

Treasury of Scripture Knowledge

Summary

For Christ sent me not to baptize, but to preach the gospel: not with wisdom of words, lest the cross of Christ should be made of none effect.

General references

Bible References

Not to

John 4:2
(although Jesus himself was not baptizing, but his disciples),
Acts 10:48
So he ordered [that] they be baptized in the name of Jesus Christ. Then they asked him to stay for several days.
Acts 26:17
rescuing you from the people and from the Gentiles to whom I am sending you,

Not

1 Corinthians 2:1
And I, [when I] came to you, brothers, did not come with superiority of speech or of wisdom, proclaiming to you the testimony of God.
2 Corinthians 4:2
but we have renounced shameful hidden things, not behaving with craftiness or adulterating the word of God, but with the open proclamation of the truth commending ourselves to every person's conscience before God.
2 Corinthians 10:3
For [although we] are living in the flesh, we do not wage war according to the flesh,
2 Peter 1:16
For we did not make known to you the power and coming of our Lord Jesus Christ [by] following ingeniously concocted myths, but [by] being eyewitnesses of that one's majesty.

Words

1 Corinthians 2:5
in order that your faith would not be in the wisdom of men, but in the power of God.

General references

John 4:2
(although Jesus himself was not baptizing, but his disciples),