Certain Jewish thinkers, such as Maimonides, believed that concubines are strictly reserved for kings, and thus that a commoner may not have a concubine; indeed, such thinkers argued that commoners may not engage in any type of sexual relations outside of a marriage.
That concubines are strictly reserved for kings, and thus that a commoner may not have a concubine. This was what certain Jewish thinkers, such as Maimonides, believed. Commoners may not engage in any type of sexual relations outside of a marriage. This was what such thinkers argued.