'Emptiness' in the Bible

Thus says the Lord,“What injustice did your fathers find in Me,That they went far from MeAnd walked after emptiness and became empty?

I looked at the earth, and behold, it was wasteland and emptiness, and to the heavens, and [they were] without their light.

But they are altogether irrational and stupid and foolishIn their discipline of delusion—their idol is [only] wood [it is ridiculous, empty and worthless]!

[Then said Jeremiah] “O Lord, my Strength and my Stronghold,And my Refuge in the day of distress and need,The nations will come to YouFrom the ends of the earth and say,‘Our fathers have inherited nothing but lies and illusion,[Worthless] things in which there is no benefit!’

Thus says the Lord of hosts,“Do not listen to the words of the [false] prophets who prophesy to you.They are teaching you worthless things and are leading you into futility;They speak a vision of their own mind and imaginationAnd not [truth] from the mouth of the Lord.

They are worthless (empty, false, futile), a work of delusion and worthy of derision;In the time of their inspection and punishment they will perish.