5 They will give an account to Him who is ready to judge the living and the dead. 6 For this reason the gospel was preached also to those who are dead, that they might be judged according to men in the flesh, but live according to God in the spirit. (1 Peter 4:5–6, NKJV)
God’s assured judgment of sinners, including those practicing the immoral excesses named in this context (1 Peter 4:3), is the very reason the gospel is preached to the world. God “desires all men to be saved and to come to the knowledge of the truth” (1 Tim. 2:4). The world is dead in sin. The gospel of God gives the sinner life out of spiritual death (Rom. 1:16-17; 6:23). Sinners who believe the gospel will obey it by repenting and being baptized (Acts 2:37-41; 1 Pet. 3:21). The result of this is salvation – life “according to God in the spirit.” This new life necessarily compels the saved to “cease from sin” (1 Pet. 4:1). Although the saved sinner will be judged harshly by those who continue to practice sin (see 1 Pet. 4:4), God’s assured forgiveness and promised eternal life confirms our heart and lives in Him. Being reviled for good conduct is but one way we are willing to “suffer in the flesh” because we have “ceased from sin” (1 Pet. 4:1).