Exodus 1:13 And the Egyptians made the children of Israel to serve with rigour. (JPS YLT)
Exodus 1:14 And they made their lives bitter with hard service, in mortar and in brick, and in all manner of service in the field; in all their service, wherein they made them serve with rigour. (JPS YLT)
Leviticus 25:43 Thou shalt not rule over him with rigour; but shalt fear thy God. (JPS DBY YLT)
Leviticus 25:46 And ye may make them an inheritance for your children after you, to hold for a possession: of them may ye take your bondmen for ever; but over your brethren the children of Israel ye shall not rule, one over another, with rigour. (JPS DBY YLT)
Leviticus 25:53 As a servant hired year by year shall he be with him; he shall not rule with rigour over him in thy sight. (JPS DBY YLT)