Charles Ellicott Commentary 1 Peter 4:9

"using hospitality one to another without murmuring:" — 1 Peter 4:9 (ASV)

Use hospitality.—It is a great pity that again (as in 1 Peter 3:8, and elsewhere) the participial clauses are broken up in our translation into separate injunctions. Here it is, properly, being hospitable. This is the first form of charity—receiving Christians who came from other towns (compare to 3 John 1:5–6). See how such hospitality covers (to the surprise of the bestowers) a multitude of sins in Matthew 25:35-38.

Without grudging.—That is, without murmuring. How frequently Christian hospitality is marred by grumbling at the expense and the trouble it costs!