Leviticus 25:43
Thou shalt not rule over him with rigor - What is rigorous service? "Service which is not determined, and service whereof there is no need." This is the definition given by the Jews; but much more is implied in this command than is expressed here. Labour beyond the person' s strength, or labor too long continued, or in unhealthy or uncomfortable places and circumstances, or without sufficient food, etc., is labor exacted with rigour, and consequently inhuman; and this law is made, not for the Mosaic dispensation and the Jewish people, but for every dispensation and for every people under heaven.
