Acts 6:10

Yet they were quite unable to withstand the wisdom and the inspiration with which he spoke.

Luke 21:15

For I will myself give you words, and a wisdom which all your opponents together will be unable to resist or defy.

Matthew 10:19-20

Whenever they betray you, do not be anxious as to how you shall speak or what you shall say, for what you shall say will be given you at the moment;

Luke 1:17

He shall go before him in the spirit and with the power of Elijah, 'to reconcile fathers to their children' and the disobedient to the wisdom of the righteous, and so make ready for the Lord a people prepared for him."

Luke 12:11-12

Whenever they take you before the Synagogue Courts or the magistrates or other authorities, do not be anxious as to how you will defend yourselves, or what your defense will be, or what you will say;

John 7:46

"No man ever spoke as he speaks!" they answered.

Acts 5:39

But, if they are of divine origin, you will be powerless to put an end to them--or else you may find yourselves fighting against God!"

Acts 7:51

O! stubborn race, heathen in heart and ears, you are for ever resisting the Holy Spirit; your ancestors did it, and you are doing it still.

1 Corinthians 2:4

My Message and my Proclamation were not delivered in the persuasive language of philosophy, but were accompanied by the manifestation of spiritual power,

Treasury of Scripture Knowledge

Summary

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

Bible References

Able

Acts 5:39
But, if they are of divine origin, you will be powerless to put an end to them--or else you may find yourselves fighting against God!"
Acts 7:51
O! stubborn race, heathen in heart and ears, you are for ever resisting the Holy Spirit; your ancestors did it, and you are doing it still.
Matthew 10:19
Whenever they betray you, do not be anxious as to how you shall speak or what you shall say, for what you shall say will be given you at the moment;
Luke 12:11
Whenever they take you before the Synagogue Courts or the magistrates or other authorities, do not be anxious as to how you will defend yourselves, or what your defense will be, or what you will say;
Luke 21:15
For I will myself give you words, and a wisdom which all your opponents together will be unable to resist or defy.
John 7:46
"No man ever spoke as he speaks!" they answered.

General references

Luke 12:12
For the Holy Spirit will show you at the moment what you ought to say."
Luke 14:6
And they could not make any answer to that.
1 Corinthians 1:27
But God chose what the world counts foolish to put its wise men to shame, and God chose what the world counts weak to put its strong things to shame,