Ark of the Covenant - Bible History Online
Bible History

Naves Topical Bible Dictionary

VANITY, Worldly labor is

Ecclesiastes 2:11

11. Then I looked on all the works that my hands had wrought, and on the labour that I had laboured to do: and, behold, all was VANITY and vexation of spirit, and there was no profit under the sun.

Ecclesiastes 4:4

4. Again, I considered all travail, and every right work, that for this a man is envied of his neighbour. This is also VANITY and vexation of spirit.

VANITY-Worldly labor is VANITY in Naves Topical Bible (Bible History Online)