JC - Chapter 36

The writings of Peter concerning the preaching to the spirits of the dead says -

"For Christ also hath once suffered for sins, the just for the unjust, that he might bring us to God, being put to death in the flesh, but quickened by the Spirit:
19 By which also he went and preached unto the spirits in prison;
20 Which sometime were disobedient, when once the longsuffering of God waited in the days of Noah, while the ark was a preparing, wherein few, that is, eight souls were saved by water."  (New Testament | 1 Peter 3:18 - 20)

Elder Talmage writes this footnote -

"The Scripture Relating to Christ Among the Spirits in Prison.—The revised version of 1 Pet. 3:18–20 reads: “Because Christ also suffered for sins once, the righteous for the unrighteous, that he might bring us to God; being put to death in the flesh, but quickened in the spirit; in which also he went and preached unto the spirits in prison, which aforetime were disobedient, when the longsuffering of God waited in the days of Noah, while the ark was a preparing, wherein few, that is eight souls were saved through water.” This is regarded by scholars as a closer approach to accuracy in translation than the common version. Certain important differences between the two versions will appear to the studious reader. The common version of the latter part of verse 18 and the whole of verse 19 reads: “being put to death in the flesh, but quickened, by the spirit: By which also he went and preached unto the spirits in prison.” The revised text expresses the true thought that Christ was quickened, that is to say, was active, in His own spirit state, although His body was inert and in reality dead at the time; and that in that disembodied state He went and preached to the disobedient spirits. The later reading fixes the time of our Lord’s ministry among the departed as the interval between His death and Resurrection."

This revised version makes more sense to me.