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 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;

Luke 21:14-15

Settle it therefore in your hearts not to meditate l beforehand what ye shall answer.

2 Corinthians 8:16

But thanks be to God, who put the same earnest care for you into the heart of Titus;

Philippians 2:13

for it is God who worketh in you both to will and to work for his good pleasure.

James 1:16-18

Do not err, 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 put the same earnest care for you into the heart of Titus;
Philippians 2:13
for it is God who worketh in you both to will and to work for his good pleasure.
James 1:16
Do not err, my beloved brethren.

And

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 21:14
Settle it therefore in your hearts not to meditate l beforehand what ye shall answer.