'Oil' in the Bible

Ye mountains of Gilboa, let there be no dew, no rain upon you, nor fields of heave-offerings! For there the shield of the mighty was vilely cast away, The shield of Saul, as not anointed with oil.

And Joab sent to Tekoah, and fetched thence a wise woman, and said to her, I pray thee, feign thyself to be a mourner, and put on mourning garments, I pray, and anoint not thyself with oil, but be as a woman that hath a long time mourned for the dead;