1 Kings 1:1 - Joseph Benson’s Commentary on the Old and New Testaments

Now King David was old Being in the end of his seventieth year. They covered him with clothes, but he gat no heat Which is not strange, considering he was a person who had been exercised with so many hardships in war, and with such tormenting cares, and fears, and sorrows for his own sins, (as divers of his psalms witness,) and for the sins and miseries of his children and people. Besides, this might be from the nature of his bodily distemper, which Dr. Lightfoot thinks was a dead palsy. [David now began to feel the effects of old age, and probably remembered with lively interest the words of his faithful friend Barzillai, spoken some time before: “Can I discern between good and evil? can thy servant taste what I eat or what I drink?”]