believe him who cannot lie, and to trust in One whom we know to be able to save, yet something may intervene which may render even this a hard thing to my reader. That hindrance may be a secret, and yet it may be none the less real. A door may be closed, not by a great stone which all can see, but by an invisible bolt which shoots into a holdfast quite out of sight. A man may have good eyes, and yet may not be able to see an object, because another substance comes in the way. You could not even see