Answer:
When the creeper passes, all the grass kneels
He stands beside the road. In a purple cap at tattered green cloak. Those who touch him, curse him.
Thirty white horses on a red hill, First they champ, Then they stamp, Then they stand still.
What always runs but never walks, often murmurs, never talks, has a bed but never sleeps, has a mouth but never eats?
With sharp edged wit and pointed poise. It can settle disputes without making a noise.
What covers its face with its hands, speaks no language, yet most known what it's saying?