We often make appointments we later either cannot keep or do not want to keep. Many times we are able to postpone, or even cancel, these appointments. There is one appointment none of us will be able to avoid. "And as it is appointed unto man once to die, after this the judgment" (Hebrews 9:27). There are many questions concerning the judgment that we cannot answer (when will the judgment take place, exactly how will the judgment take place, etc.). But there are several things concerning God's judgment that we can know.
First, we know we are self-condemned whenever we practice those things we condemn in others (Romans 2:1). Jesus, in his "Sermon on the Mount," warned against hypocritical judgment of others (Matthew 7:1-5). Unfortunately, we are often times much better at seeing the sin in the lives of others than we are at recognizing sin in our own lives.
Second, we know God judges according to the truth (Romans 2:2). We will not be judged according to the ways, or opinions, of men (Proverbs 14:12), or the standards of society. Jesus said, "Sanctify them through thy truth, thy word is truth" (John 17:17).
Third, we know God's goodness does not indicate an approval of sin (Romans 2:4). The fact that we may temporarily escape the consequences of our sin does not indicate God approves of our sin. God is longsuffering and patient toward us because he is not willing that any should perish, but that all men would repent (II Peter 3:9).
Fourth, we know God will judge all men according to their works (Romans 2:6, 8). Although we are justified by faith (Romans 5:1), we are not justified by faith alone (James 2:24-26). We will be judged according to how we have lived.
Fifth, we know God will judge without respect of persons (Romans 2:11). Someone has said that death is the great equalizer. Whether or not a man has enjoyed the benefits of material wealth, an education, or societal status in this life, all will be equal before God on the day of judgment. All will be judged by the same standard.
Sixth, we know God will judge through Christ (Romans 2:16). We will all appear before the judgment seat of Christ (II Corinthians 5:10).