'Oil' in the Bible

The field is laid waste, the land mourneth; for the corn is wasted, the new wine is dried up, the oil languisheth.

And Jehovah will answer and say unto his people, Behold, I send you corn, and new wine, and oil, and ye shall be satisfied therewith; and I will no more make you a reproach among the nations.

And the floors shall be full of corn, and the vats shall overflow with new wine and oil.