In the day when the keepers of the house shall tremble] The hands, which keep the body, wherein the soul dwells. the strong men shall bow themselves] The legs, which uphold the body. the grinders cease] The teeth, that chew or grinde the meat. the grinders cease, because they are few] Or, the grinders fail, because they grinde little. those that look out of the windows be darkened] The eyes, that look out of their holes.