O ye sons of men, how long will ye turn my glory into shame? how long will ye love vanity, and seek after leasing? Selah. O ye sons of men - בני איש beney ish, ye powerful men - ye who are now at the head of affairs, or who are leaders of the multitude.
Love vanity - The poor, empty, shallow-brained, pretty-faced Absalom; whose prospects are all vain, and whose promises are all empty!
Seek after leasing? - This is a Saxon word, from falsehood, from to lie. Cardmarden has adopted this word in his translation, Rouen, 1566. It is in none of the Bibles previously to that time, nor in any after, as far as my own collection affords me evidence; and appears to have been borrowed by King James's translators from the above.
Selah - Mark this! See what the end will be!