'Hard' in the Bible

Do not make attempts to get equal with one who has done you wrong, or keep hard feelings against the children of your people, but have love for your neighbour as for yourself: I am the Lord.

And if a man from another country is living in your land with you, do not make life hard for him;

Do not be a hard master to him, but have the fear of God before you.

And they will be your children's heritage after you, to keep as their property; they will be your servants for ever; but you may not be hard masters to your countrymen, the children of Israel.