1 Peter 3:18-20

MSB(i) 18 For Christ also suffered for sins once for all, the righteous for the unrighteous, to bring you to God. He was put to death in the body but made alive in the Spirit, 19 in whom He also went and preached to the spirits in prison 20 who disobeyed long ago when God waited patiently in the days of Noah while the ark was being built. In the ark a few people, only eight souls, were saved through water.