John Gill Commentary Mark 6:36

"send them away, that they may go into the country and villages round about, and buy themselves somewhat to eat." — Mark 6:36 (ASV)

Send them away
Leave off preaching, dismiss the assembly; see (Matthew 14:15) ;

that they may go into the country round about ;
or "into the fields"; that is, to the odd houses; which were here and there in the fields; (See Gill on Mark 5:14);

and into the villages ;
the little country towns that were near at hand:

and buy themselves bread, for they have nothing to eat ;
they brought no provisions with them, and there were none to be had in that desert place; and it was high time they had some refreshment; for the usual time of dining was past, the first evening was come, the day was on the decline, and was far spent.