'Customs' in the Bible

Do not follow the practices of the land of Egypt, where you used to live, or follow the practices of the land of Canaan, where I am bringing you. You must not follow their customs.

Therefore shall ye keep mine ordinance, that ye commit not any one of these abominable customs, which were committed before you, and that ye defile not yourselves therein: I am the LORD your God.

You are not to live by the customs of the nations, whom I've cast away right in front of you. Because they did all of these things, I detested them.