Charles Ellicott Commentary Psalms 62:9

"Surely men of low degree are vanity, and men of high degree are a lie: In the balances they will go up; They are together lighter than vanity." — Psalms 62:9 (ASV)

Are vanity. —Or, mere breath.

To be laid in the balance. —Literally, in the balances to go up, which may mean in the scales they must go up, i.e., kick the beam. But a slight change in one letter gives the more probable, when weighed in the scales.