The apostle John writes, "He who says he abides in Him ought himself also to walk just as He walked" (I John 2:6). Just as Jesus Christ refrained from judging the world until the proper time, so also the brethren of God's church must not render judgments on men until God's appointed time.
When is this appointed time? The same as Christ's time to judge! Daniel writes, "[The false church persecutes the saints] till that the Ancient of Days hath come, and judgment is given to the saints of the Most High, and the time hath come. . ." (Daniel 7:22, Young's Literal Translation). This squares perfectly with Revelation 5:10: "And [You] have made us kings and priests to our God; and we shall reign on the earth." When our Savior returns and grants us jurisdiction over the world, we will judge it!
In obedience to Christ, the saints must restrain themselves from passing judgment on the world until the time set by God. The saints have no authority or power at this time to sit in judgment over others' lives. But when the time is right, they will judge.
Do you not know that the saints will judge the world? And if the world will be judged by you, are you unworthy to judge the smallest matters? Do you not know that we shall judge angels? How much more, things that pertain to this life? (I Corinthians 6:2-3)
Paul castigates the Corinthians for taking each other to court for matters they should be learning how to judge and resolve among themselves. Yes, he says, we should be learning to judge now because we will one day make far greater judgments, but we have no power to do so now: "For what have I to do with judging those also who are outside [the church]? Do you not judge those who are inside? But those who are outside God judges" (I Corinthians 5:12-13).
The future kings and priests of God must learn judgment in their own lives and inside the body of the church. Paul writes, "For if we would judge ourselves, we would not be judged [by God]" (I Corinthians 11:31). God is judging those in His church today: "For the time has come for judgment to begin at the house of God" (I Peter 4:17). He is also teaching us how to judge: "Do not judge according to appearance, but judge with righteous judgment" (John 7:24; see Matthew 7:1-5). But He has given us no permission or commission to judge the world—those who are outside the church—at this time. That time will come soon enough if we learn to judge ourselves now.
Therefore, we should leave the matter of judging people for their crimes in the hands of the world's governments. God has allowed men to set up various governing bodies, and they have jurisdiction for now (Romans 13:1-4). Though we live in the world, we are not of it (John 17:11, 16), so we should not become involved in its judgments.
God commands His church to stay separate from the world: "Come out from among them and be separate, says the Lord" (II Corinthians 6:17). Like dedicated soldiers during wartime, we have no time and it is not our place to become entangled in the affairs of civilian life (II Timothy 2:4). Like representatives of a heavenly government (II Corinthians 5:20), we have no business involving ourselves in matters of a foreign state, though we live here and enjoy its benefits.
Our commission is to pursue perfection in the sight of God during the short span of years allotted to us (Matthew 5:48; II Corinthians 7:1). We should be busy striving toward becoming "a perfect man, to the measure of the stature of the fullness of Christ" (Ephesians 4:13). Christ, when He walked this earth, leaving us an example, did not judge the world. Neither should we.