Reference: Spirits In Prison
Fausets
1Pe 3:18-19. The argument is, Be not afraid (1Pe 3:14,17) of suffering for well doing even unto death, for death in the flesh leads to life in the spirit as in Christ's case, who was put to death in the flesh but quickened in spirit (i.e. in virtue of His divine nature: Ro 1:3-4; 1Co 15:45; 2Co 13:4) in which (as distinguished from in person) He went in the person of Noah (compare 1Pe 1:11 "a preacher of righteousness" (2Pe 2:5; He went not locally but as Eph 2:17, "He came and preached peace," namely, by His ministers) and preached unto the spirits in prison, namely, the antediluvian unbelievers; their bodies seemed free, but their spirits were in prison (Ps 141:9) and they like "prisoners shut up in the prison" just as the fallen are judicially regarded as in chains of darkness, though for a time at large on the earth (2Pe 2:4; Isa 24:18,22-23; 61:1; Ge 7:11, referred to in Isa 24:18). "His Spirit" long "strove" with them, but ceased to do so because even the seed of the godly Seth proved "flesh" and quenched the Spirit (Ge 6:3).
See Verses Found in Dictionary
Then the Lord said, My Spirit shall not forever dwell and strive with man, for he also is flesh; but his days shall yet be 120 years.
In the year 600 of Noah's life, in the seventeenth day of the second month, that same day all the fountains of the great deep were broken up and burst forth, and the windows and floodgates of the heavens were opened.
Keep me from the trap which they have laid for me, and the snares of evildoers.
And he who flees at the noise of the terror will fall into the pit; and he who comes up out of the pit will be caught in the snare. For the windows of the heavens are opened [as in the deluge], and the foundations of the earth tremble and shake.
And he who flees at the noise of the terror will fall into the pit; and he who comes up out of the pit will be caught in the snare. For the windows of the heavens are opened [as in the deluge], and the foundations of the earth tremble and shake.
And they will be gathered together as prisoners are gathered in a pit or dungeon; they will be shut up in prison, and after many days they will be visited, inspected, and punished or pardoned. Then the moon will be confounded and the sun ashamed, when [they compare their ineffectual fire to the light of] the Lord of hosts, Who will reign on Mount Zion and in Jerusalem, and before His elders will show forth His glory.
The Spirit of the Lord God is upon me, because the Lord has anointed and qualified me to preach the Gospel of good tidings to the meek, the poor, and afflicted; He has sent me to bind up and heal the brokenhearted, to proclaim liberty to the [physical and spiritual] captives and the opening of the prison and of the eyes to those who are bound,
[The Gospel] regarding His Son, Who as to the flesh (His human nature) was descended from David, And [as to His divine nature] according to the Spirit of holiness was openly designated the Son of God in power [in a striking, triumphant and miraculous manner] by His resurrection from the dead, even Jesus Christ our Lord (the Messiah, the Anointed One).
And He came and preached the glad tidings of peace to you who were afar off and [peace] to those who were near.
They sought [to find out] to whom or when this was to come which the Spirit of Christ working within them was indicating when He predicted the sufferings of Christ and the glories that should follow [them].
But even in case you should suffer for the sake of righteousness, [you are] blessed (happy, to be envied). Do not dread or be afraid of their threats, nor be disturbed [by their opposition].
For [it is] better to suffer [unjustly] for doing right, if that should be God's will, than to suffer [justly] for doing wrong. For Christ [the Messiah Himself] died for sins once for all, the Righteous for the unrighteous (the Just for the unjust, the Innocent for the guilty), that He might bring us to God. In His human body He was put to death, but He was made alive in the spirit, read more. In which He went and preached to the spirits in prison,
For God did not [even] spare angels that sinned, but cast them into hell, delivering them to be kept there in pits of gloom till the judgment and their doom. And He spared not the ancient world, but preserved Noah, a preacher of righteousness, with seven other persons, when He brought a flood upon the world of ungodly [people].