Bible Verses About Vanity: Foolish questions are

from which things some having swerved have turned aside unto vain talking;

desiring to be teachers of the law, though they understand neither what they say, nor whereof they confidently affirm.

O Timothy, guard that which is committed unto thee, turning away from the profane babblings and oppositions of the knowledge which is falsely so called;

Of these things put them in remembrance, charging them in the sight of the Lord, that they strive not about words, to no profit, to the subverting of them that hear.

But shun profane babblings: for they will proceed further in ungodliness,

but shun foolish questionings, and genealogies, and strifes, and fightings about the law; for they are unprofitable and vain.