9lest you concede your vigor to others, and your years to one who is cruel;
10lest strangers feast on your wealth, and your labors enrich the house of a foreigner.
11At the end of your life you will groan when your flesh and your body are spent,
12and you will say, “How I hated discipline, and my heart despised reproof!
13I did not listen to the voice of my teachers or incline my ear to my mentors.