Adam Clarke's Bible Commentary Verse 2. Let there be sought-a young virgin] This was the best remedy which in his state could be prescribed. His nearly exhausted frame would infallibly absorb from her young and healthy body an additional portion of animal heat, and consequently trim and revive the flame of animal life. This is properly, as I have elsewhere expressed it, Friar Bacon's secret for the cure of old age.
Matthew Henry Commentary
Verses 1-4 - We have David sinking under infirmities. He was chastised for his recent sins, and felt the effects of his former toils and hardships.
Original Hebrew ויאמרו559 לו עבדיו5650 יבקשׁו1245 לאדני113 המלך4428 נערה5291 בתולה1330 ועמדה5975 לפני6440 המלך4428 ותהי1961 לו סכנת5532 ושׁכבה7901 בחיקך2436 וחם2552 לאדני113 המלך׃4428