'Yourself' in the Bible

Do not tell [it] in Gath; you must not weep at all. In Beth-le-Aphrah roll yourself [in] dust.

You yourself will eat but not be satisfied; your hunger [will be] in your midst, and you will put away, but you will not save, and what you save I will hand over to the sword.

You yourself will sow, but you will not reap; you will tread olives, but you will not anoint yourself with oil; [you will tread] grapes, but you will not drink wine.