The picture is Noah, His preaching for 120 years, and the eight souls that got in the Ark.
1 Peter 3:20…eight souls were saved by water. The like figure whereunto even baptism doth also now save us
The waters of the flood came upon the earth…God’s Judgment and Wrath took the lives of every living thing…but eight souls were saved in the Ark…by water. They were saved from the Judgment of an angry God. They got in the Ark. They obeyed the Gospel. They lived according to God in the Spirit.
1 Peter 4:6…For for this cause was the gospel preached also to them that are dead, that they might be judged according to men in the flesh, but live according to God in the spirit.
The like figure is the Spirit’s Baptism that puts the believer into Christ and His body. It’s the Spirit’s baptism that saves us from God’s future Judgment. After hearing the Gospel, we repent and trust Christ for personal forgiveness. We get put into (baptized into) Christ by the Spirit of God which is a like figure whereunto even baptism doth also now save us. When we are in Christ we are saved from Wrath like Noah and his family were, when they were put in the Ark by the Spirit of God.
Gen. 7:16-17…And they went in unto Noah into the ark, two and two of all flesh, wherein is the breath of life. And they that went in, went in male and female of all flesh, as God had commanded him: and the LORD shut him in.
In the New Testament the Spirit’s baptism into Christ is a likefigure to how God put Noah and his family into the Ark and saved them from the Judgment to come. In the New Testament Jesus is the Ark. Glory!