The New Testament is part of the Christian Bible and it contains stories about Jesus and his teachings. One part of the New Testament is called the "household codes". These codes were written a long time ago and tell people how to live in their families.
Imagine you are part of a family. You have a mom and a dad, and maybe some brothers and sisters. Well, the household codes were written to tell people what the right way to behave is when they are part of a family.
For example, there is a part of the household codes that talks about husbands and wives. It says that husbands should love their wives and treat them with respect. Wives should also respect their husbands and do what they can to help them.
There is also a part that talks about parents and children. It says that parents should love and care for their children, and make sure they behave well. Children should obey their parents and be good and respectful.
These codes were very important a long time ago because families were very different then. People didn't have the same ideas about what was good and bad like we do now, so the household codes helped guide them. Nowadays, we still have families just like they did back then, but we also have different ways of understanding what makes a good family.