Mark 13:11

And when they arrest you [and] hand you over, do not be anxious beforehand what you should say, but whatever is given to you at that hour, say this. For you are not the ones who are speaking, but the Holy Spirit.

Matthew 10:19-21

But whenever they hand you over, do not be anxious how [to speak] or what you should say, for what you should say will be given to you at that hour.

Luke 12:11-12

But when they bring you before the synagogues and the rulers and the authorities, do not be anxious how or what you should speak in your own defense or what you should say,

Luke 21:14-15

{Therefore make up your minds} not to prepare in advance to speak in your own defense,

Acts 6:10

And they were not able to resist the wisdom and the Spirit with which he was speaking.

Exodus 4:10-12

And Moses said to Yahweh, "Please, Lord, I [am] not a man of words, {neither recently nor in the past nor since your speaking} to your servant, because I [am] heavy of mouth and of tongue."

2 Samuel 23:2

"The spirit of Yahweh speaks through me, and his word [is] upon my tongue.

Isaiah 50:4

The Lord Yahweh has given me [the] tongue of pupil, to know how to help [the] weary [with] a word. He awakens {morning by morning}, awakens an ear for me to listen as [do] the pupils.

Jeremiah 1:6-9

Then I said, "Ah, Lord Yahweh! Look, I do not know [how] to speak, for I [am] a youth."

Daniel 3:16-18

Shadrach, Meshach and Abednego answered and said to the king, Nebuchadnezzar, "We have no need on this matter {to present a defense to you}.

Matthew 10:17

But beware of people, because they will hand you over to councils, and they will flog you in their synagogues.

Mark 13:9

"But you, watch out for yourselves! They will hand you over to councils and you will be beaten in the synagogues and will have to stand before governors and kings because of me, for a witness to them.

John 3:27

John answered and said, "A man can receive not one [thing] unless it is granted to him from heaven!

Acts 2:4

And they were all filled with the Holy Spirit and began to speak in other languages as the Spirit gave them [ability] to speak out.

Acts 3:13

The God of Abraham and of Isaac and of Jacob, the God of our fathers, has glorified his servant Jesus, whom you handed over and denied in the presence of Pilate, [after] he had decided to release [him].

Acts 4:8-22

Then Peter, filled with the Holy Spirit, said to them, "Rulers of the people and elders,

Acts 4:31

And [when] they had prayed, the place in which they were gathered was shaken, and they were all filled with the Holy Spirit and began to speak the word of God with boldness.

Acts 6:15

And [as they] looked intently at him, all those who were sitting in the Sanhedrin saw his face [was] like the face of an angel.

Acts 7:55

But he, being full of the Holy Spirit, looked intently into heaven [and] saw the glory of God, and Jesus standing at the right hand of God.

1 Corinthians 2:13

[things] which we also speak, not in words taught by human wisdom, but in [words] taught by the Spirit, explaining spiritual [things] to spiritual [people].

Ephesians 3:5

(which in other generations was not made known to the sons of men as it has now been revealed to his holy apostles and prophets by the Spirit):

Ephesians 6:19-20

and for me, that a word may be given to me at the opening of my mouth, to make known with boldness the mystery of the gospel,

James 1:5

Now if any of you lacks wisdom, let him ask for [it] from God, who gives to all without reservation and not reproaching, and it will be given to him.

1 Peter 1:12

to whom it was revealed that they were serving not themselves but you with reference to the same [things] which now have been announced to you through those who proclaimed the gospel to you by the Holy Spirit sent from heaven, {things into which} angels desire to look.

Treasury of Scripture Knowledge

Summary

But when they shall lead you, and deliver you up, take no thought beforehand what ye shall speak, neither do ye premeditate: but whatsoever shall be given you in that hour, that speak ye: for it is not ye that speak, but the Holy Ghost.

General references

Bible References

And deliver

Mark 13:9
"But you, watch out for yourselves! They will hand you over to councils and you will be beaten in the synagogues and will have to stand before governors and kings because of me, for a witness to them.
Matthew 10:17
But beware of people, because they will hand you over to councils, and they will flog you in their synagogues.
Acts 3:13
The God of Abraham and of Isaac and of Jacob, the God of our fathers, has glorified his servant Jesus, whom you handed over and denied in the presence of Pilate, [after] he had decided to release [him].

Shall be

Isaiah 50:4
The Lord Yahweh has given me [the] tongue of pupil, to know how to help [the] weary [with] a word. He awakens {morning by morning}, awakens an ear for me to listen as [do] the pupils.
John 3:27
John answered and said, "A man can receive not one [thing] unless it is granted to him from heaven!
Ephesians 6:19
and for me, that a word may be given to me at the opening of my mouth, to make known with boldness the mystery of the gospel,
James 1:5
Now if any of you lacks wisdom, let him ask for [it] from God, who gives to all without reservation and not reproaching, and it will be given to him.

But

2 Samuel 23:2
"The spirit of Yahweh speaks through me, and his word [is] upon my tongue.
1 Corinthians 2:13
[things] which we also speak, not in words taught by human wisdom, but in [words] taught by the Spirit, explaining spiritual [things] to spiritual [people].
Ephesians 3:5
(which in other generations was not made known to the sons of men as it has now been revealed to his holy apostles and prophets by the Spirit):
1 Peter 1:12
to whom it was revealed that they were serving not themselves but you with reference to the same [things] which now have been announced to you through those who proclaimed the gospel to you by the Holy Spirit sent from heaven, {things into which} angels desire to look.

General references

Exodus 4:12
So then go, and I myself will be with your mouth, and I will teach you what you must speak."
Luke 12:11
But when they bring you before the synagogues and the rulers and the authorities, do not be anxious how or what you should speak in your own defense or what you should say,
Luke 21:14
{Therefore make up your minds} not to prepare in advance to speak in your own defense,