1 Peter 3:19

in which he also went and preached unto the imprisoned spirits,

1 Peter 4:6

Because for this cause was the gospel preached also to those that are dead, that they might be judged in flesh according to men, but live in spirit according to God.

Isaiah 42:7

that thou might open the eyes of the blind, that thou might bring out the prisoners from the prison and those that sit in darkness out of the prison house.

Isaiah 49:9

that thou may say to the prisoners, Go forth; and unto those that are in darkness, Show yourselves. Upon the ways shall they be fed, and upon all the high places shall be their pastures.

Isaiah 61:1

The Spirit of the Lord GOD is upon me because the LORD has anointed me; he has sent me to preach good tidings unto those who are cast down; to bind up the wounds of the broken-hearted, to proclaim liberty to the captives, and the opening of the prison to those that are bound;

1 Peter 1:11-12

searching when and in what point of time the Spirit of Christ which was in them did signify, which announced beforehand the afflictions that were to come upon the Christ, and the glory that should follow them.

Revelation 19:10

And I fell at his feet to worship him. And he said unto me, See thou do it not: I am thy fellowservant and with thy brethren that 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 are expired, Satan shall be loosed out of his prison

Nehemiah 9:30

Yet many years didst thou forbear them and didst protest against them with thy spirit by the hand of thy prophets; yet they did not hear; therefore, thou didst give them into the hand of the peoples of the land.

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 when and in what point of time the Spirit of Christ which was in them did signify, which announced beforehand the afflictions that were to come upon the Christ, and the glory that should follow them.
1 Peter 4:6
Because for this cause was the gospel preached also to those that are dead, that they might be judged in flesh according to men, but live in spirit according to God.
Nehemiah 9:30
Yet many years didst thou forbear them and didst protest against them with thy spirit by the hand of thy prophets; yet they did not hear; therefore, thou didst give them into the hand of the peoples of the land.
Revelation 19:10
And I fell at his feet to worship him. And he said unto me, See thou do it not: I am thy fellowservant and with thy brethren that have the testimony of Jesus; worship God; for the testimony of Jesus is the spirit of prophecy.

In

Isaiah 42:7
that thou might open the eyes of the blind, that thou might bring out the prisoners from the prison and those that sit in darkness out of the prison house.
Isaiah 49:9
that thou may say to the prisoners, Go forth; and unto those that are in darkness, Show yourselves. Upon the ways shall they be fed, and upon all the high places shall be their pastures.
Isaiah 61:1
The Spirit of the Lord GOD is upon me because the LORD has anointed me; he has sent me to preach good tidings unto those who are cast down; to bind up the wounds of the broken-hearted, to proclaim liberty to the captives, and the opening of the prison to those that are bound;
Revelation 20:7
And when the thousand years are expired, Satan shall be loosed out of his prison