Zevist is an ancient Greek term. Why so many thousands of coins and other items that were meant to be blessed as a protective or prosperous talisman were with ZEV, ZEFS, and similar versions of this.
Ancient Greek slavery is also misunderstood. In that time, slave was simply the word for servant, so any kind of servant could also be called a slave. These were voluntary and paid jobs which are in most cases the same jobs that we still have today. Things like babysitters, private teachers, maids, cleaners, gardeners, chefs, repairmen, handymen. All of these same jobs that we still have today where people may be hired to help a rich family.