Daniel 5:6

Then the king's countenance was changed, literally, "Then the king, his color was changed unto him," and his thoughts troubled him, as his guilty conscience filled him with terror, so that the joints of his loins were loosed, they no longer possessed the strength to hold the body together firmly, and his knees smote one against another, his terror causing him to lose control of them entirely. "How changed the scene from the glee of his blasphemous revelry to this paleness of cheek, convulsion of frame, remorse of conscience, and dread foreboding of doom! Many a sinner has had a like experience, and other thousands must have it!" (Cowles.)