Proverbs 7:2

And live, i.e. thou shalt live. A promise in the form of a command, as Proverbs 3:25. As the apple of thine eye; with all possible care and diligence, as men guard that part from all dangers, yea, even from the least mote. The eye is a most noble and necessary, and therefore highly esteemed and beloved, part of the body, and the apple thereof is the most honourable, and beautiful, and useful part of that part, and it is a most tender part, easily hurt, or destroyed, and therefore needs to be diligently watched.