and wherever he goes, the firstborn son in every family will die. Your own son will die, and so will the son of the lowest slave woman. Even the firstborn males of cattle will die.
When you lend money to people, you are allowed to keep something of theirs as a guarantee that they will pay back the loan. But don't take one or both of their millstones, or else they may starve. They need these stones for grinding grain into flour to make bread.