'Sacred' in the Bible

You are to hold a sacred assembly on the first day and another sacred assembly on the seventh day. No work may be done on those days except for preparing what people need to eat—you may do only that.

You must not bow down to their gods or worship them. Do not imitate their practices. Instead, demolish them and smash their sacred pillars to pieces.

As for the incense you are making, you must not make any for yourselves using its formula. It is to be regarded by you as sacred to the Lord.

Instead, you must tear down their altars, smash their sacred pillars, and chop down their Asherah poles.