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.

Acts 6:10

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

Treasury of Scripture Knowledge

Summary

And it came to pass, when David had made an end of speaking these words unto Saul, that Saul said, Is this thy voice, my son David? And Saul lifted up his voice, and wept.

Bible References

Is this

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.
Acts 6:10
Yet they were quite unable to withstand the wisdom and the inspiration with which he spoke.