'Vanity' in the Bible

Thus says Yahweh, "What unrighteousness have your fathers found in me, that they have gone far from me, and have walked after vanity, and are become vain?

For the customs of the peoples are vanity; for one cuts a tree out of the forest, the work of the hands of the workman with the axe.

They are vanity, a work of delusion: in the time of their visitation they shall perish.

Yahweh, my strength, and my stronghold, and my refuge in the day of affliction, to you shall the nations come from the ends of the earth, and shall say, Our fathers have inherited nothing but lies, [even] vanity and things in which there is no profit.

Thus says Yahweh of Armies, Don't listen to the words of the prophets who prophesy to you: they teach you vanity; they speak a vision of their own heart, and not out of the mouth of Yahweh.

They are vanity, a work of delusion: in the time of their visitation they shall perish.

Thus says Yahweh of Armies: The broad walls of Babylon shall be utterly overthrown, and her high gates shall be burned with fire; and the peoples shall labor for vanity, and the nations for the fire; and they shall be weary.