Job 15:31 KJV

Let not him that is deceived trust in vanity: for vanity shall be his recompence.
Job 15:31, King James Version

In context

30 He shall not depart out of darkness; the flame shall dry up his branches, and by the breath of his mouth shall he go away.

31 Let not him that is deceived trust in vanity: for vanity shall be his recompence.

32 It shall be accomplished before his time, and his branch shall not be green.