Ecclesiastes 12:3

The house — Of the body: whose keepers are the hands and arms, which are man's best instruments to defend his body; and which in a special manner are subject to his trembling. The strong men — The thighs and legs, in which the main strength of the body consists. Grinders — The teeth, those especially which are commonly so called, because they grind the meat. Cease — To perform their office. And those, &c. — The eyes. By windows he understands either the eye — lids, which like windows, are either opened or shut: or, those humours and coats of the eyes, which are the chief instruments by which we see.