What does Genesis 4:11 mean?

Now you're cut off from the ground itself. It's not going to help you anymore, even if you work it hard. Your brother's blood is in the soil, and it's crying out against you. Genesis 4:11 - Modern Text Bible

(God tells Cain that the earth, which received Abel's blood, will no longer support him. This is a direct consequence of Cain's violence.)