A.T. Robertson Commentary Luke 10:5

"And into whatsoever house ye shall enter, first say, Peace [be] to this house." — Luke 10:5 (ASV)

First say (πρωτον λεγετε). Say first. The adverb πρωτον can be construed with "enter" (εισελθητε), but probably with λεγετε is right. The word spoken is the usual oriental salutation.