John Gill Commentary Judges 19:21

"So he brought him into his house, and gave the asses fodder; and they washed their feet, and did eat and drink." — Judges 19:21 (ASV)

So he brought him into his house
Showed him the way to it, and in a kind and friendly manner introduced him, and bid him welcome:

and gave provender unto the asses ;
this is mentioned first, it being then perhaps, as now, the first thing that a careful man is concerned for, to see that his cattle is taken care of, and then himself; and such a method this ancient good man took with his guest:

and they washed their feet ;
which was commonly done to strangers in those hot countries, and was very refreshing, see (Genesis 18:4) (19:2)

and did eat and drink ;
sat down at table and supped with him.