'Itself' in the Bible

“Command Aaron and his sons: This is the law of the burnt offering; the burnt offering itself must remain on the altar’s hearth all night until morning, while the fire of the altar is kept burning on it.

You are not to reap what grows by itself from your crop, or harvest the grapes of your untended vines. It must be a year of complete rest for the land.

The fiftieth year will be your Jubilee; you are not to sow, reap what grows by itself, or harvest its untended vines.