'Themselves' in the Bible

"You are not to defile yourselves by doing any of these things, since all of these nations that I'm casting out before you have defiled themselves this way.

"Tell Aaron and his sons that they are to separate themselves for the sacred things of the Israelis and that they are not to defile my holy name. I am the LORD.

The fiftieth year is to be a year of jubilee for you. You are not to sow or harvest the spilled kernels that grow of themselves or pick grapes from the untrimmed vines