1 Peter 3:19

in which also He went and preached to the spirits in prison,

1 Peter 4:6

For to this end the gospel was preached also to the dead, that they might be judged according to men in the flesh, but live according to God in the Spirit.

Isaiah 42:7

to open the blind eyes, to bring out the prisoners from the prison, those who sit in darkness out of the prison house.

Isaiah 49:9

that You may say to the prisoners, Go out! To those who are in darkness, Show yourselves! They shall feed in the ways, and their pastures shall be in all high places.

Isaiah 61:1

The Spirit of the Lord Jehovah is on Me; because Jehovah has anointed Me to preach the Gospel to the poor; He has sent Me to bind up the broken-hearted, to proclaim liberty to the captives, and the opening of the prison to those who are bound;

1 Peter 1:11-12

searching for what, or what manner of time, the Spirit of Christ made clear within them, testifying beforehand of the sufferings of Christ, and the glories that should follow.

Revelation 19:10

And I fell at his feet to worship him. And he said to me, See, do not do it! I am your fellow servant, and of your brothers who have the testimony of Jesus. Worship God, for the testimony of Jesus is the spirit of prophecy.

Revelation 20:7

And when the thousand years have expired, Satan will be loosed out of his prison.

Nehemiah 9:30

And many years You had patience with them, and testified against them by Your Spirit, by Your prophets, but they would not give ear. And You gave them into the hand of the people of the lands.

Treasury of Scripture Knowledge

Summary

By which also he went and preached unto the spirits in prison;

Bible References

By which

1 Peter 1:11
searching for what, or what manner of time, the Spirit of Christ made clear within them, testifying beforehand of the sufferings of Christ, and the glories that should follow.
1 Peter 4:6
For to this end the gospel was preached also to the dead, that they might be judged according to men in the flesh, but live according to God in the Spirit.
Nehemiah 9:30
And many years You had patience with them, and testified against them by Your Spirit, by Your prophets, but they would not give ear. And You gave them into the hand of the people of the lands.
Revelation 19:10
And I fell at his feet to worship him. And he said to me, See, do not do it! I am your fellow servant, and of your brothers who have the testimony of Jesus. Worship God, for the testimony of Jesus is the spirit of prophecy.

In

Isaiah 42:7
to open the blind eyes, to bring out the prisoners from the prison, those who sit in darkness out of the prison house.
Isaiah 49:9
that You may say to the prisoners, Go out! To those who are in darkness, Show yourselves! They shall feed in the ways, and their pastures shall be in all high places.
Isaiah 61:1
The Spirit of the Lord Jehovah is on Me; because Jehovah has anointed Me to preach the Gospel to the poor; He has sent Me to bind up the broken-hearted, to proclaim liberty to the captives, and the opening of the prison to those who are bound;
Revelation 20:7
And when the thousand years have expired, Satan will be loosed out of his prison.