The ancient - The elder; the old man.
And honorable - Hebrew, ‘The man of elevated countenance.’ The man of rank and office.
The prophet that teacheth lies - The false prophet. Of those there were many; and probably at this time many in Samaria.
Related Commentaries of Isaiah 9:15
Isaiah 9:15
15 The ancient and honourable, he is the head; and the prophet that teacheth lies, he is the tail.