Luke 21:15

for I will give you such wisdom of speech as all your opponents combined will not be able to resist and refute.

Acts 6:10

but they could not cope with his good practical sense and the spiritual power with which he usually spoke.

Luke 12:12

for at that very moment the Holy Spirit will teach you what you ought to say."

Luke 24:45

Then He opened their minds so that they might continue to understand the Scriptures,

Acts 2:4

and they were all filled with the Holy Spirit, and began to speak in foreign languages as the Spirit granted them to utter divine things.

Acts 4:8-13

Then Peter, because he was filled with the Holy Spirit, said to them, "Leaders and elders of the people,

Acts 4:31-33

When they had prayed, the place where they were meeting was shaken, and they were all filled with the Holy Spirit, and continued courageously to speak God's message.

Acts 24:25

But as he continued to talk about uprightness, self-control, and the coming judgment, Felix became alarmed, and said, "For the present you may go, but when I find a good opportunity, I will send for you."

Acts 26:28

Then Agrippa answered Paul, "In brief you are trying to persuade me and make a Christian of me!"

Ephesians 6:19

and for me that a message may be given me when I open my lips, so that I may boldly make known the open secret of the good news,

Colossians 4:3-4

At the same time keep on praying for me too, that God may open the door of opportunity for the message, so that I may tell the open secret about Christ, for the sake of which I am held a prisoner,

2 Timothy 4:16-17

When I first defended myself at court, nobody came to help me, but everybody deserted me. May it never be charged to their account.

James 1:5

But if any one of you is deficient in wisdom, let him ask God who generously gives to everyone and never reproaches one with its lack, 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 they could not cope with his good practical sense and the spiritual power with which he usually spoke.
Acts 24:25
But as he continued to talk about uprightness, self-control, and the coming judgment, Felix became alarmed, and said, "For the present you may go, but when I find a good opportunity, I will send for you."
Acts 26:28
Then Agrippa answered Paul, "In brief you are trying to persuade me and make a Christian of me!"
2 Timothy 4:16
When I first defended myself at court, nobody came to help me, but everybody deserted me. May it never be charged to their account.

General references

Luke 12:12
for at that very moment the Holy Spirit will teach you what you ought to say."
Luke 14:6
But they could make no reply to this.
Acts 21:37
As he was about to be taken into the barracks, Paul said to the colonel, "May I say something to you?" The colonel asked, "Do you know Greek?
1 Corinthians 1:27
Just the opposite: God chose what the world calls foolish to put the wise to shame, what the world calls weak to put the strong to shame,