Luke 21:15

for I will give you a mouth, and wisdom which all your adversaries shall not be able to withstand or gainsay.

Acts 6:10

And they were not able to withstand the wisdom and the spirit with which he was speaking.

Luke 12:12

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

Luke 24:45

Then He opened their mind, that they might understand the Scriptures;

Acts 2:4

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

Acts 4:8-13

Then Peter, filled with the Holy Spirit, said to them, "Rulers of the people and elders,

Acts 4:31-33

And, when they had prayed, the place in which they had assembled was shaken; and they were all filled with the Holy Spirit, and were speaking the word of God with boldness.

Acts 24:25

And, as he was reasoning about righteousness, continence, and the judgment to come, Felix, becoming terrified, answered, "Go your way for the present; and, when I obtain a suitable opportunity, I will call for you;"

Acts 26:28

And Agrippa said to Paul, "In a small degree you are persuading me to make a Christian!"

Ephesians 6:19

and on my behalf that utterance may be given to me, in opening my mouth to make known with boldness the mystery of the Gospel,

Colossians 4:3-4

at the same time praying for us also, that God may open to us a door for the word, to speak the mystery of Christ (because of which I have also become bound),

2 Timothy 4:16-17

In my first defense, no one stood by me, but all forsook me. May it not be laid to their account!

James 1:5

But, if any of you is lacking in wisdom, let him ask from God, Who giveth to all liberally, and upbraideth not; and it will be given 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
And they were not able to withstand the wisdom and the spirit with which he was speaking.
Acts 24:25
And, as he was reasoning about righteousness, continence, and the judgment to come, Felix, becoming terrified, answered, "Go your way for the present; and, when I obtain a suitable opportunity, I will call for you;"
Acts 26:28
And Agrippa said to Paul, "In a small degree you are persuading me to make a Christian!"
2 Timothy 4:16
In my first defense, no one stood by me, but all forsook me. May it not be laid to their account!

General references

Luke 12:12
for the Holy Spirit will teach you in that very hour what ye ought to say."
Luke 14:6
And they were not able to return an answer to these things.
Acts 21:37
And, when about to be led into the castle, Paul says to the chief captain, "May I say something to you?" And he said, "Do you know Greek?
1 Corinthians 1:27
but God chose the foolish things of the world, that He might put to shame the wise; and God chose the weak things of the world, that He might put to shame the things that are strong;