Matthew 10:19-20

But when they deliver you, take no thought, how or what ye shall speak; for it shall be given you in that very hour what ye shall speak.

Luke 12:11-12

But when they bring you to the synagogues and to magistrates and powers,

Luke 21:14-15

Settle it therefore in your hearts, not to premeditate what to answer. For I will give you a mouth and wisdom,

2 Corinthians 8:16

But thanks be to God, who put the same diligent care for you in the heart of Titus.

Philippians 2:13

For it is God that worketh in you according to his good pleasure, both to will and to do.

James 1:16-18

Do not err, my beloved brethren. Every good gift and every perfect gift is from above,

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 diligent care for you in the heart of Titus.
Philippians 2:13
For it is God that worketh in you according to his good pleasure, both to will and to do.
James 1:16
Do not err, my beloved brethren. Every good gift and every perfect gift is from above,

And

Matthew 10:19
But when they deliver you, take no thought, how or what ye shall speak; for it shall be given you in that very hour what ye shall speak.
Luke 12:11
But when they bring you to the synagogues and to magistrates and powers,
Luke 21:14
Settle it therefore in your hearts, not to premeditate what to answer. For I will give you a mouth and wisdom,