Matthew 10:19

But when they deliver you up, be not anxious how or what ye shall speak: for it shall be given you in that hour what ye shall speak.

Exodus 4:12

Now therefore go, and I will be with thy mouth, and teach thee what thou shalt speak.

Matthew 6:25

Therefore I say unto you, be not anxious for your life, what ye shall eat, or what ye shall drink; nor yet for your body, what ye shall put on. Is not the life more than the food, and the body than the raiment?

Mark 13:11-13

And when they lead you to judgment , and deliver you up, be not anxious beforehand what ye shall speak: but whatsoever shall be given you in that hour, that speak ye; for it is not ye that speak, but the Holy Spirit.

Luke 12:11

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

2 Timothy 4:17

But the Lord stood by me, and strengthened me; that through me the message might me fully proclaimed, and that all the Gentiles might hear: and I was delivered out of the mouth of the lion.

Exodus 4:15

And thou shalt speak unto him, and put the words in his mouth: and I will be with thy mouth, and with his mouth, and will teach you what ye shall do.

Jeremiah 1:7

But Jehovah said unto me, Say not, I am a child; for to whomsoever I shall send thee thou shalt go, and whatsoever I shall command thee thou shalt speak.

Jeremiah 1:9

Then Jehovah put forth his hand, and touched my mouth; and Jehovah said unto me, Behold, I have put my words in thy mouth:

Daniel 3:16-18

Shadrach, Meshach, and Abed-nego answered and said to the king, O Nebuchadnezzar, we have no need to answer thee in this matter.

Matthew 6:31

Be not therefore anxious, saying, What shall we eat? or, What shall we drink? or, Wherewithal shall we be clothed?

Matthew 6:34

Be not therefore anxious for the morrow: for the morrow will be anxious for itself. Sufficient unto the day is the evil thereof.

Luke 21:12-17

But before all these things, they shall lay their hands on you, and shall persecute you, delivering you up to the synagogues and prisons, bringing you before kings and governors for my name's sake.

Acts 4:8-14

Then Peter, filled with the Holy Spirit, said unto them, Ye rulers of the people, and elders,

Acts 5:29-33

But Peter and the apostles answered and said, We must obey God rather than men.

Acts 6:10

And they were not able to withstand the wisdom and the Spirit by which he spake.

Acts 26:2-11

I think myself happy, king Agrippa, that I am to make my defense before thee this day touching all the things whereof I am accused by the Jews:

Philippians 4:6

In nothing be anxious; but in everything by prayer and supplication with thanksgiving let your requests be made known unto God.

James 1:5

But if any of you lacketh wisdom, let him ask of God, who giveth to all liberally and upbraideth not; and it shall be given him.

Treasury of Scripture Knowledge

Summary

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

Bible References

When

Mark 13:11
And when they lead you to judgment , and deliver you up, be not anxious beforehand what ye shall speak: but whatsoever shall be given you in that hour, that speak ye; for it is not ye that speak, but the Holy Spirit.
Luke 12:11
And when they bring you 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 answer:

It shall

Exodus 4:12
Now therefore go, and I will be with thy mouth, and teach thee what thou shalt speak.
Jeremiah 1:7
But Jehovah said unto me, Say not, I am a child; for to whomsoever I shall send thee thou shalt go, and whatsoever I shall command thee thou shalt speak.
Daniel 3:16
Shadrach, Meshach, and Abed-nego answered and said to the king, O Nebuchadnezzar, we have no need to answer thee in this matter.
Acts 4:8
Then Peter, filled with the Holy Spirit, said unto them, Ye rulers of the people, and elders,
Acts 5:29
But Peter and the apostles answered and said, We must obey God rather than men.
Acts 6:10
And they were not able to withstand the wisdom and the Spirit by which he spake.
Acts 26:2
I think myself happy, king Agrippa, that I am to make my defense before thee this day touching all the things whereof I am accused by the Jews:
2 Timothy 4:17
But the Lord stood by me, and strengthened me; that through me the message might me fully proclaimed, and that all the Gentiles might hear: and I was delivered out of the mouth of the lion.

General references

Exodus 4:12
Now therefore go, and I will be with thy mouth, and teach thee what thou shalt speak.
Luke 12:11
And when they bring you 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 answer:
Acts 21:37
And as Paul was about to be brought into the castle, he saith unto the chief captain, May I say something unto thee? And he said, Dost thou know Greek?

American Standard Version Public Domain