Christ was quickened by the Spirit, and it was by the same Spirit that he went and preached unto the spirits in prison. This describes what he did back in the days of Noah, who will be the next example that Peter brings to us.
So, the message is: ‘Take your stand. Take a deeper view of hostility and suffering. Look at all the advantages of it: you will be vindicated in the end. Consider that this happened to Christ. Consider also, that it happened to Noah. Think of him.’ He witnessed and stood up to derision and scorn for 120 years, throughout the time of the building of the ark. He actually had a far tougher time than us, because, apart from him and his sons – his family, consisting of only eight souls – nobody else was saved! Yet God was with him, blessed him, preserved him, and rewarded him. Peter says, ‘It’s always been the same. Noah had such a bleak time but he was vindicated and blessed, and, in the end, he was the one by whom the world was judged.’ Noah is brought in as another example of patient suffering for doing good. He suffered as a faithful preacher in his time; his message was derided and ridiculed by his generation, and yet his testimony to all generations has been of lasting value. That generation perished, but those who have come afterwards owe their existence to his faith and obedience. Though he suffered, he did not flinch from carrying out the task assigned to him and in warning his contemporaries that he might save any of them who would listen.
Many people have taught that because verse 19 follows directly from the death and resurrection of Christ, it refers to something he did immediately after the resurrection. The idea then is that Christ preached to the spirits. What spirits? There is a divergence here. Some say, the spirits in hell. Others say, No, these were not human spirits; these were the fallen angels who were imprisoned, it is said, way back in the time of Noah. Those that were involved there at the flood were imprisoned, and he went to proclaim his triumph to them. But the subject here is an example of suffering. There is no great reason why Peter should suddenly talk about a great mystery – what Christ did after the resurrection in preaching either to condemned human souls, or preaching to condemned fallen angels. But there is every reason why he should give examples of suffering that God uses. The first one is that of Christ, the highest example. The second one is that of Noah who suffered great hostility, and yet God used him for a new order entirely.