Luke 21:15

"for I will give you utterance and a wisdom which none of your adversaries will be able to answer or withstand.

Acts 6:10

but were unable to withstand the wisdom and spirit with which he used to speak.

Luke 12:12

"for the Holy Spirit will teach you in that hour what you ought to say."

Luke 24:45

Then he opened their minds to understand the Scriptures,

Acts 2:4

and they were all filled with the Holy Spirit, and began to speak with other tongues as the Spirit was giving them utterance.

Acts 4:8-13

Then Peter, filled with the Holy Spirit, answered them.

Acts 4:31-33

When they had prayed, the place where they were gathered was shaken; and they were all filled with the Holy Spirit, and began to speak the message of the Lord with boldness.

Acts 24:25

And as he reasoned about morality, self-control, and the future judgment, Felix was terrified, and said, "For the present go on your way, and when I find a convenient season, I will send for you."

Acts 26:28

Agrippa answered, "In short, you are doing your best to persuade me to become a Christian."

Ephesians 6:19

and for me, that utterance may be given me to open my mouth boldly, and to make known the mystery of the gospel for which I am an ambassador,

Colossians 4:3-4

Keep on praying for me, too, that God may open for me a door of utterance to speak the secret truth of Christ, for which I am a prisoner.

2 Timothy 4:16-17

At the time of my first defense no one stood by me; on the contrary they all deserted me??ay it not be laid to their charge!

James 1:5

If any one of you is lacking in wisdom, let him ask it from the God who gives to all men freely and without upbraiding; and it will be given to him.

Treasury of Scripture Knowledge

Summary

For I will give you a mouth and wisdom, which all your adversaries shall not be able to gainsay nor resist.

Bible References

Which

Acts 6:10
but were unable to withstand the wisdom and spirit with which he used to speak.
Acts 24:25
And as he reasoned about morality, self-control, and the future judgment, Felix was terrified, and said, "For the present go on your way, and when I find a convenient season, I will send for you."
Acts 26:28
Agrippa answered, "In short, you are doing your best to persuade me to become a Christian."
2 Timothy 4:16
At the time of my first defense no one stood by me; on the contrary they all deserted me??ay it not be laid to their charge!

General references

Luke 12:12
"for the Holy Spirit will teach you in that hour what you ought to say."
Luke 14:6
They could not answer this.
Acts 21:37
Just as he was about to be taken into the barracks, Paul said to the tribune, "May I speak to you?"
1 Corinthians 1:27
No, God has chosen the world's folly to confound its philosophy; and the world's weakness to confound its strength.