'Oil' in the Bible

For the lips of an immoral woman drip honey [like a honeycomb]And her speech is smoother than oil;

He who loves [only selfish] pleasure will become a poor man;He who loves and is devoted to wine and [olive] oil will not become rich.

There is precious treasure and oil in the house of the wise [who prepare for the future],But a short-sighted and foolish man swallows it up and wastes it.

Oil and perfume make the heart glad;So does the sweetness of a friend’s counsel that comes from the heart.

Whoever attempts to restrain her [criticism] might as well try to stop the wind,And grasps oil with his right hand.