Acts 4:20

for we cannot keep from telling what we have seen and heard."

Acts 22:15

because you are to be His witness to all men of what you have seen and heard.

1 John 1:1-3

It is what existed from the beginning, what we have heard, what we have seen with our own eyes, what we have beheld, what our own hands have touched, about the very message of life --

Luke 1:2

just as the original eyewitnesses who became ministers of the message

Acts 1:8

but you are going to receive power when the Holy Spirit comes upon you, and you must be witnesses for me in Jerusalem and all over Judea and Samaria, and to the very ends of the earth."

Acts 1:22

from the time of His baptism by John down to the day when He was taken up from us, must be added to our number as a witness to His resurrection."

Acts 2:4

and they were all filled with the Holy Spirit, and began to speak in foreign languages as the Spirit granted them to utter divine things.

Acts 2:32

I mean Jesus whom God raised from the dead, to which fact we are all witnesses,

Acts 3:15

and you killed the Prince of life, but God raised Him from the dead, to which fact we are witnesses.

Acts 5:32

We and the Holy Spirit that God has given to those who practice obedience to Him are witnesses to these things."

Acts 10:39-41

We are witnesses of everything that He did in the country of the Jews and in Jerusalem. Yet they murdered Him by hanging Him upon a tree.

Acts 17:16-17

While Paul was waiting for them at Athens, his spirit was stirred to its depths to see the city completely steeped in idolatry.

Acts 18:5

By the time Silas and Timothy arrived from Macedonia, Paul was wholly absorbed in preaching the message and was enthusiastically assuring the Jews that Jesus is the Christ.

1 Corinthians 9:16-17

For if I do preach the good news, I have no ground for boasting of it, for I cannot help doing it. Yes, indeed, I am accursed if I do not preach the good news.

Hebrews 2:3-4

how can we escape, if we pay no attention at all to a salvation that is so great? This is so because it was first proclaimed by the Lord Himself, and then it was proved to us to be valid by the very men who heard Him themselves,

Treasury of Scripture Knowledge

Summary

For we cannot but speak the things which we have seen and heard.

General references

Bible References

We cannot

Acts 2:4
and they were all filled with the Holy Spirit, and began to speak in foreign languages as the Spirit granted them to utter divine things.
Acts 17:16
While Paul was waiting for them at Athens, his spirit was stirred to its depths to see the city completely steeped in idolatry.
Acts 18:5
By the time Silas and Timothy arrived from Macedonia, Paul was wholly absorbed in preaching the message and was enthusiastically assuring the Jews that Jesus is the Christ.
1 Corinthians 9:16
For if I do preach the good news, I have no ground for boasting of it, for I cannot help doing it. Yes, indeed, I am accursed if I do not preach the good news.

The things

Acts 1:8
but you are going to receive power when the Holy Spirit comes upon you, and you must be witnesses for me in Jerusalem and all over Judea and Samaria, and to the very ends of the earth."
Acts 3:15
and you killed the Prince of life, but God raised Him from the dead, to which fact we are witnesses.
Acts 5:32
We and the Holy Spirit that God has given to those who practice obedience to Him are witnesses to these things."
Acts 10:39
We are witnesses of everything that He did in the country of the Jews and in Jerusalem. Yet they murdered Him by hanging Him upon a tree.
Acts 22:15
because you are to be His witness to all men of what you have seen and heard.
Luke 1:2
just as the original eyewitnesses who became ministers of the message
Hebrews 2:3
how can we escape, if we pay no attention at all to a salvation that is so great? This is so because it was first proclaimed by the Lord Himself, and then it was proved to us to be valid by the very men who heard Him themselves,
1 John 1:1
It is what existed from the beginning, what we have heard, what we have seen with our own eyes, what we have beheld, what our own hands have touched, about the very message of life --

General references

Mark 4:22
For nothing is ever hidden by people except for the purpose of having it known, and people do not keep secrets except to tell them.
1 Corinthians 14:32
for the spirits of prophets yield to prophets;