Matthew 10:19-20

And, when they deliver you up, be not anxious how or what ye shall speak; for it shall be given you in that hour what to speak;

Luke 12:11-12

And, when they bring you in before the synagogues, and the rulers, and the authorities, be not anxious how or what ye shall answer, or what ye shall say;

Luke 21:14-15

Settle it, therefore, in your hearts, not to meditate beforehand how to make a defense;

2 Corinthians 8:16

But thanks be to God Who putteth the same diligence for you into the heart of Titus.

Philippians 2:13

for it is God Who is working in you both to will and to work for His good pleasure.

James 1:16-18

Be not deceived, my beloved brethren.

Treasury of Scripture Knowledge

Summary

The preparations of the heart in man, and the answer of the tongue, is from the LORD.

Bible References

Preparations

2 Corinthians 8:16
But thanks be to God Who putteth the same diligence for you into the heart of Titus.
Philippians 2:13
for it is God Who is working in you both to will and to work for His good pleasure.
James 1:16
Be not deceived, my beloved brethren.

And

Matthew 10:19
And, when they deliver you up, be not anxious how or what ye shall speak; for it shall be given you in that hour what to speak;
Luke 12:11
And, when they bring you in before the synagogues, and the rulers, and the authorities, be not anxious how or what ye shall answer, or what ye shall say;
Luke 21:14
Settle it, therefore, in your hearts, not to meditate beforehand how to make a defense;