'Emptiness' in the Bible

Let him not trust in emptiness, deceiving himself; for emptiness shall be his reward.

But the pelican and the porcupine will possess it. The owl and the raven will dwell in it. He will stretch the line of confusion over it, and the plumb line of emptiness.

For, uttering great swelling words of emptiness, they entice in the lusts of the flesh, by licentiousness, those who are indeed escaping from those who live in error;