'Free' in the Bible

Then the kings of the earth, the important people, the generals, the rich, the powerful, and all the slaves and free people concealed themselves in caves and among the rocks in the mountains.

The second beast forces all people important and unimportant, rich and poor, free and slaves to be marked on their right hands or on their foreheads,

Eat the flesh of kings, the flesh of commanders, the flesh of warriors, the flesh of horses and their riders, and the flesh of all people, both free and slaves, both unimportant and important."

He threw him into the bottomless pit, locked it, and sealed it over him to keep him from deceiving the nations anymore until the thousand years were over. After that, he must be set free for a little while.