George Macdonald from Man’s Difficulty Concerning Prayer:

That God cannot interfere to modify his plans, interfere without the change of a single law of his world, is to me absurd. If we can change, God can change, else is he less free than we–his plans, I say, not principles, not ends: God himself forbid!–change them after divine fashion, above our fashions as the heavens are higher than the earth.