Luke 21:15

which all your adversaries shall not be able to contradict nor withstand.

Acts 6:10

and they were not able to resist the wisdom and spirit by which he spake.

Luke 12:12

for the holy Spirit shall teach you at that very time what ye ought to say.

Luke 24:45

Then He opened their mind, to understand the scriptures:

Acts 2:4

and they were all filled with 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 unto them, Ye rulers of the people,

Acts 4:31-33

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

Acts 24:25

And as he was reasoning of justice, temperance, and a future judgement, Felix trembled, and said, Go thy way for this time, and I will take a proper opportunity to call for thee again.

Acts 26:28

I know that thou believest them. Then Agrippa said unto Paul, Thou almost persuadest me to be a Christian.

Ephesians 6:19

and for me particularly, that utterance may be given me, that I may open my mouth with freedom, to make known the mystery of the gospel:

Colossians 4:3-4

Praying at the same time for us also, that God would open to us a door of utterance, to declare the mystery of Christ, for which also I am in bonds: that I may make it manifest, as I ought.

2 Timothy 4:16-17

In my first defence no one stood by me, but all men forsook me: God grant it may not be laid to their charge!

James 1:5

And if any of you lack wisdom, let him ask it of God, who giveth to all men liberally and upbraideth 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 they were not able to resist the wisdom and spirit by which he spake.
Acts 24:25
And as he was reasoning of justice, temperance, and a future judgement, Felix trembled, and said, Go thy way for this time, and I will take a proper opportunity to call for thee again.
Acts 26:28
I know that thou believest them. Then Agrippa said unto Paul, Thou almost persuadest me to be a Christian.
2 Timothy 4:16
In my first defence no one stood by me, but all men forsook me: God grant it may not be laid to their charge!

General references

Luke 12:12
for the holy Spirit shall teach you at that very time what ye ought to say.
Luke 14:6
and they were not able to answer Him again to these things.
Acts 21:37
And as Paul was going to be led into the castle, he said to the tribune, May I be allowed to speak a word to thee? And he said, Canst thou speak Greek?
1 Corinthians 1:27
but God hath chosen things that are foolish in the eye of the world to put it's wise men to confusion; and God hath chosen the weak things of the world to confound the mighty;