Luke 21:15

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

Jeremiah 1:9

And Jehovah put forth His hand, and touched my mouth. And Jehovah said to me, Behold, I have put My Words in your mouth.

Acts 6:10

And they were not able to resist the wisdom and the Spirit by which he spoke.

Exodus 4:11-12

And Jehovah said to him, Who has made man's mouth? Or who makes the dumb, or deaf, or the seeing, or the blind? Have not I, Jehovah?

Proverbs 2:6

For Jehovah gives wisdom; out of His mouth come knowledge and understanding.

Luke 12:12

For the Holy Spirit shall teach you in the same hour what you ought to say.

Luke 24:45

And He opened their mind to understand the Scriptures.

Acts 2:4

And they were all filled of the Holy Spirit, and began to speak in other languages, as the Spirit gave them utterance.

Acts 4:8-13

Then Peter, filled with 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 where they were assembled was shaken. And they were all filled with the Holy Spirit, and they spoke the Word of God with boldness.

Acts 24:25

And as he reasoned of righteousness, temperance, and the Judgment to come, Felix trembled and answered, Go for this time, but taking time later, I will call for you.

Acts 26:28

And Agrippa said to Paul, Do you persuade me to be a Christian in but a little?

Ephesians 6:19

And pray for me, that utterance may be given to me, that I may open my mouth boldly to make known the mystery of the gospel,

Colossians 4:3-4

praying together about us also, that God may open to us a door of the Word, to speak the mystery of Christ, for which I also have been bound,

2 Timothy 4:16-17

At my first answer no one was beside me, but all deserted me. May it not be laid to their charge.

James 1:5

But if any of you lacks wisdom, let him ask of God, who gives to all liberally and with no reproach, and it shall 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
And they were not able to resist the wisdom and the Spirit by which he spoke.
Acts 24:25
And as he reasoned of righteousness, temperance, and the Judgment to come, Felix trembled and answered, Go for this time, but taking time later, I will call for you.
Acts 26:28
And Agrippa said to Paul, Do you persuade me to be a Christian in but a little?
2 Timothy 4:16
At my first answer no one was beside me, but all deserted me. May it not be laid to their charge.

General references

Exodus 4:12
And now go, and I will be with your mouth and teach you what you shall say.
Luke 12:12
For the Holy Spirit shall teach you in the same hour what you ought to say.
Luke 14:6
And they could not answer Him again as to these things.
Acts 21:37
And as Paul was about to be led into the fortress, he said to the chiliarch, Is it lawful for me to say a thing to you? And he said, Do you know Greek?
1 Corinthians 1:27
But God has chosen the foolish things of the world to confound the wise; and God has chosen the weak things of the world to confound the things which are mighty;