'Futile' in the Bible

You must not turn aside, for then you would go after futile things which can not profit or deliver, because they are futile.

For who knows what is good for a man during his lifetime, during the few years of his futile life? He will spend them like a shadow. For who can tell a man what will be after him under the sun?

Those who fashion a graven image are all of them futile, and their precious things are of no profit; even their own witnesses fail to see or know, so that they will be put to shame.

“I know his fury,” declares the Lord,“But it is futile;His idle boasts have accomplished nothing.