God gave the Jewish people his instructions in the law. Paul was talking about the Law of Moses. Because of this, some Jews thought that they were better than Gentiles. They judged Gentiles in an unfair way.
Gentiles hadn’t been given the law. Even so, some Gentiles lived according to God’s ways as described in the law. And some Jews who knew the Law of Moses didn’t obey it. Paul made it clear that people shouldn’t judge one another. Only God can judge people fairly. His judgement will be based on how they have lived their lives.
Jesus will judge even the way people think. Some people honour God and do good works that help others. This shows that they have faith in Jesus. These people will receive eternal life.
Others say no to God and only care about themselves. These people will receive God’s anger against sin and evil. God is very kind to people and wants them to turn away from their sin. When people repent they can trust God to give them life that death can’t destroy.