Unmoving, austere, implacable.

Again, from McCarthy's The Crossing:

He nodded. He knew her well enough, this old woman of Mexico, her sons long dead in that blood and violence which her prayers and her prostrations seemed powerless to appease. Her frail form was a constant in that land, her silent anguishings. Beyond the church walls the night harbored a millennial dread panoplied in feathers and the scales of royal fish and if it yet fed upon the children still who could say what worse wastes of war and torment and despair the old women's constancy might not have stayed, what direr histories yet against which could be counted at last nothing more than her small figure bent and mumbling, her crone's hands clutching her beads of fruitseed. Unmoving, austere, implacable. Before just such a God.