John Gill Commentary 1 Samuel 8:16

"And he will take your men-servants, and your maid-servants, and your goodliest young men, and your asses, and put them to his work." — 1 Samuel 8:16 (ASV)

And he will take your manservants, and your maidservants ,
&c.] Into his own family, for his own use and service, if he wants them, or likes them better than what he has:

and your goodliest young men :
that are tall and lusty, comely and beautiful, of a proper stature and good aspect; and such in all countries used to be chosen for officers in courts, or attendants there; and so the Turks to this day pitch upon young men to attend on great personages, who are of a comely form, have admirable features, and are well shaped, (See Gill on Daniel 1:4),

and your asses, and put them to his work ;
employ them in ploughing his fields, drawing his carriages, or bearing his burdens; and so any other cattle that would serve the same purposes, as oxen, camels