Dvar Torah by Rabbi Zelig Pliskin
The Torah states: “You shall not rule over him (your servant) with rigor, but you shall fear the Almighty” (Leviticus 25:43).
Why does the Torah need to add the proscription “you shall fear the Almighty”?
A master who gives his servant work just to keep him busy is expressing a lack of respect for the dignity of the person who is working for him. People are created in the image of the Almighty and have a spark of divinity in them. As such they must be treated with respect. Since only the master knows what is in his heart, the Torah focuses him to be aware of his motivations by telling him, “And you shall fear the Almighty.” The Torah is teaching the master and us to feel an inner respect for others.