Luke 21:15

for I will give you a mouth and wisdom which all your enemies shall not be able to resist or dispute.

Acts 6:10

and were not able to resist the wisdom and spirit with which he spoke.

Luke 12:12

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

Luke 24:45

Then he opened their understanding to understand the Scriptures,

Acts 2:4

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

Acts 4:8-13

Then Peter, full of the Holy Spirit, said to them, Rulers of the people and elders of Israel,

Acts 4:31-33

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

Acts 24:25

And as he discoursed of righteousness, and temperance, and the judgment about to come, Felix being terrified answered, Go for the present; but when I have time I will call you.

Acts 26:28

And Agrippa said to Paul, You almost persuade me to be a Christian.

Ephesians 6:19

and for me, that a word may be given me at the opening of my mouth boldly to make known the mystery of the gospel,

Colossians 4:3-4

praying also at the same time for us, that God will open to us a door of utterance to declare the mystery of Christ, for which also I am bound,

2 Timothy 4:16-17

At my first defense no one stood by me, but all forsook me; may it not be set to their account;

James 1:5

And if any one of you lacks wisdom, let him ask of God, who gives to all liberally and upbraids not, and it shall 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 were not able to resist the wisdom and spirit with which he spoke.
Acts 24:25
And as he discoursed of righteousness, and temperance, and the judgment about to come, Felix being terrified answered, Go for the present; but when I have time I will call you.
Acts 26:28
And Agrippa said to Paul, You almost persuade me to be a Christian.
2 Timothy 4:16
At my first defense no one stood by me, but all forsook me; may it not be set to their account;

General references

Luke 12:12
for the Holy Spirit shall teach you in that hour what you ought to say.
Luke 14:6
And they could not answer to these things.
Acts 21:37
And being about to be carried into the fortress, Paul said to the chiliarch, May I have permission to speak to you? And he said, Do you understand Greek?
1 Corinthians 1:27
but God has chosen the foolish things of the world to confound the wise, and the weak things of the world has God chosen to put to shame the mighty,