Albert Barnes Commentary Isaiah 3:14

"Jehovah will enter into judgment with the elders of his people, and the princes thereof: It is ye that have eaten up the vineyard; the spoil of the poor is in your houses:" — Isaiah 3:14 (ASV)

With the ancients ... – With the old men, the counselors.

You have eaten up the vineyard – Hebrew ‘You have burnt up’ – that is, you have consumed or destroyed it. By the vineyard is represented the Jewish republic or people (Psalms 80:9–13); compare the notes at (Isaiah 5:1–7). The princes and rulers had, by their exactions and oppressions, ruined the people, and destroyed the country.

The spoil of the poor – The “plunder” of the poor; or that which you have taken from the poor by exactions and oppressions. The word “spoil” commonly means the plunder or booty which is obtained in war.