Acts 6:10

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

Luke 21:15

For I will give you a mouth and wisdom, which all your adversaries will not be able to withstand or gainsay.

Matthew 10:19-20

But when they deliver you up, be not anxious as to how or What ye shall speak; for it will be given you in that hour what ye shall speak.

Luke 1:17

And he will go before his face in the spirit and power of Elijah, to turn the hearts of fathers to children, and the disobedient to the wisdom of the righteous, to make ready for the Lord a prepared people.

Luke 12:11-12

And when they bring you to the synagogues and the magistrates and the authorities, be not anxious as to how or what ye shall answer, or what ye shall say;

John 7:46

The officers answered, Never man spoke like this man.

Acts 5:39

but if it be of God, ye will not be able to overthrow them; lest haply ye be found also fighting against God.

Acts 7:51

Stiffnecked, and uncircumcised in heart and ears! ye do always resist the Holy Spirit; as your fathers did, so do ye.

1 Corinthians 2:4

and my speech and my preaching were not in persuasive words of wisdom, but in demonstration of the Spirit, and of 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 it be of God, ye will not be able to overthrow them; lest haply ye be found also fighting against God.
Acts 7:51
Stiffnecked, and uncircumcised in heart and ears! ye do always resist the Holy Spirit; as your fathers did, so do ye.
Matthew 10:19
But when they deliver you up, be not anxious as to how or What ye shall speak; for it will be given you in that hour what ye shall speak.
Luke 12:11
And when they bring you to the synagogues and the magistrates and the authorities, be not anxious as to how or what ye shall answer, or what ye shall say;
Luke 21:15
For I will give you a mouth and wisdom, which all your adversaries will not be able to withstand or gainsay.
John 7:46
The officers answered, Never man spoke like this man.

General references

Luke 12:12
for the Holy Spirit will teach you in that very hour what ye ought to say.
Luke 14:6
And they could make no answer to this.
1 Corinthians 1:27
but the foolish things of the world did God choose, to put to shame the wise; and the weak things of the world did God choose, to put to shame the things which are strong;