Cross reference
1 Corinthians 3:20
20 And again, The Lord knoweth the thoughts of the wise, that they are vain.
Psalms 94:11
11 The LORD knoweth the thoughts of man, that they are vanity.
Colossians 2:8
8 Beware lest any man spoil you through philosophy and vain deceit, after the tradition of men, after the rudiments of the world, and not after Christ.
Romans 1:21
21 Because that, when they knew God, they glorified him not as God, neither were thankful; but became vain in their imaginations, and their foolish heart was darkened.
Job 11:11-12
11 For he knoweth vain men: he seeth wickedness also; will he not then consider it?
12 For vain men would be wise, though man be born like a wild ass's colt.
Psalms 2:1
1 Why do the heathen rage, and the people imagine a vain thing?