'Oil' in the Bible

O mountains of Gilboa, [let there be] no dew or rain upon you or on the fields of [grain for] offerings, for there the small shield of [the] mighty [was] defiled, the small shield of Saul [was] not anointed with oil.

So Joab sent to Tekoa and took from there a wise woman, and he said to her, "Please pretend to mourn and put on garments of mourning. You should not anoint yourself [with] oil, and you must act like this woman who has been mourning over the dead for {a long time}.