Slavery is theft — theft of a life, theft of work, theft of any property or produce, theft even of the children a slave might have borne.
The ten slaves in front of Pablo said they were not people anymore. They were things. A property.
Pablo agreed to them to some extent but he still wanted them to run away.
"So this red seal on your chest makes sure you don't run away from your master? What does it do exactly? And where are you people sold? What about your parents and stuff?" Pablo asked some rapid questions.
The eldest slave answered them without any problem.
"This red seal shows that we are slaves. We have been sold and we now belong to someone else. We can't work anywhere other than near our Master. We are just supposed to listen to our master's order. And if we did try to run away, then this red seal will act and we will die of heart attack.