in which he also went and preached to the spirits in prison,
A more probable explanation is that these "spirits" were the unbelievers who disobeyed God in Noah’s day by rejecting his preaching. [Note: Fanning, pp. 449-50; Raymer, pp. 851-52; Selwyn, p. 199; John S. Feinberg, "1 Peter 3:18-20, Ancient Mythology, and the Intermediate State," Westminster Theological Journal 48:2 (Fall 1986):303-36; and Wayne Grudem, "Christ Preaching through Noah: 1 Peter 3:19-20 in the Light of Dominant Themes in Jewish Literature," Trinity Journal 7NS:2 (Fall 1986):3-31.] They are now "spirits" since they died long ago and their bodies have not yet experienced resurrection. He said the spirits of these unbelievers are in prison now (i.e., Sheol) awaiting resurrection and judgment by God (cf. Revelation 20:11-15). One could say that Jesus proclaimed a message to Noah’s unbelieving contemporaries in His spirit (i.e., His spiritual state of life before the Incarnation) through Noah. Noah was preaching a message that God had given him, and in this sense Jesus Christ spoke through him (cf. 2 Corinthians 5:20). Just so, Jesus Christ was speaking through Peter’s readers to their unbelieving persecutors as they bore witness for Him in a hostile world. Noah faced the same type of opposition in his day that Peter’s original readers did in theirs and we do in ours.