'Oil' in the Bible

For the lips of the strange woman drop honey, and her mouth is smoother than oil;

He that loveth mirth shall be a poor man; he that loveth wine and oil shall not be rich.

There is costly store and oil in the dwelling of a wise man; but a foolish man swalloweth it up.

whosoever will restrain her restraineth the wind, and his right hand encountereth oil.