“For the time has come for judgment to begin at the house of God; and if it begins with us first, what will be the end of those who do not obey the gospel of God?” (1 Peter 4:17, NKJV)
The apostle Peter speaks of judgment commencing at God’s house. Since it has been almost two thousand years since he wrote this, we can safely conclude what started then continues to be true now. God’s house is the church (Heb. 3:4-6; 1 Tim. 3:15). So, we readily admit the church of Christ has and will undergo judgments. Judgment in this verse means “the process of judgment (separation) leading to a decision” (Vine, I:222). Peter has been discussing intense persecutions already happening to Christians. He said God’s people should not think it a strange (foreign, novel) thing when trials come upon us (1 Pet. 4:12). Instead, he exhorts us to “rejoice” since such trials are our fellowship with the sufferings of Christ (1 Pet. 4:13; Phil. 3:10). God blesses and comforts Christians who suffer for His name’s sake. Accepting reproach for our faith without shame, we are to glorify God in the name “Christian” (1 Pet. 4:14-16). To be ashamed of being a Christian judges us unworthy of Christ (Mk. 8:38). Suffering for one’s faith in Christ separates the faithful from those who abandon their faith to escape reproach. Thus, persecution has the effect of judging Christians. It separates the unfaithful from the righteous. Since Christians are saved through such difficulties, it becomes obvious that those who “do not obey the gospel of God” will not be saved (1 Pet. 4:17, 18).