Genesis 4:12

“When you work the ground, it will no longer yield its crops for you. You will be a restless wanderer on the earth.”   Genesis 4:12

Is Cain the first nomad?  His green thumb is now gone.  He can no longer farm for his food.  The wanderer part might be a consequence of not being able to work the land.  Or it could be another part of his punishment.  Or maybe a little of both.

The consequences of our actions are not always what we expect them to be.