Acts 6:10

They were quite unable, however, to resist the wisdom and the Spirit with which he spoke.

Luke 21:15

for I will give you utterance and wisdom which none of your opponents will be able to withstand or reply to.

Matthew 10:19-20

But when they have delivered you up, have no anxiety as to how you shall speak or what you shall say; for at that very time it shall be given you what to say;

Luke 1:17

and he will be His forerunner in the spirit and power of Elijah, to turn fathers' hearts to the children, and cause the rebellious to walk in the wisdom of the upright, to make a people perfectly ready for the lord."

Luke 12:11-12

And when they are bringing you before synagogues and magistrates and governors, do not anxiously ponder the manner or matter of your defence, nor what you are to say;

John 7:46

"No mere man has ever spoken as this man speaks," said the officers.

Acts 5:39

But if it is really from God, you will be powerless to put them down--lest perhaps you find yourselves to be actually fighting against God."

Acts 7:51

"O stiff-necked men, uncircumcised in heart and ears, you also are continually at strife with the Holy Spirit--just as your forefathers were.

1 Corinthians 2:4

And my language and the Message that I proclaimed were not adorned with persuasive words of earthly wisdom, but depended upon truths which the Spirit taught and mightily carried home;

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 it is really from God, you will be powerless to put them down--lest perhaps you find yourselves to be actually fighting against God."
Acts 7:51
"O stiff-necked men, uncircumcised in heart and ears, you also are continually at strife with the Holy Spirit--just as your forefathers were.
Matthew 10:19
But when they have delivered you up, have no anxiety as to how you shall speak or what you shall say; for at that very time it shall be given you what to say;
Luke 12:11
And when they are bringing you before synagogues and magistrates and governors, do not anxiously ponder the manner or matter of your defence, nor what you are to say;
Luke 21:15
for I will give you utterance and wisdom which none of your opponents will be able to withstand or reply to.
John 7:46
"No mere man has ever spoken as this man speaks," said the officers.

General references

Luke 12:12
for the Holy Spirit shall teach you at that very moment what you must say."
Luke 14:6
To this they could make no reply.
1 Corinthians 1:27
But God has chosen the things which the world regards as foolish, in order to put its wise men to shame; and God has chosen the things which the world regards as destitute of influence, in order to put its powerful things to shame;