A more thorough explanation:

Res religiosae are things that are considered sacred or religious. In civil law, this term is often used to refer to burial places.

For example, a cemetery is a res religiosae because it is a sacred place where people are buried. Similarly, a church or temple may also be considered a res religiosae because it is a place of worship and religious significance.

Overall, res religiosae are important to many people because they represent a connection to their faith and beliefs. They are treated with respect and reverence, and are often protected by law to ensure that they are not desecrated or destroyed.