Luke 10:6 KJV

And if the son of peace be there, your peace shall rest upon it: if not, it shall turn to you again.
Luke 10:6, King James Version

In context

5 And into whatsoever house ye enter, first say, Peace be to this house.

6 And if the son of peace be there, your peace shall rest upon it: if not, it shall turn to you again.

7 And in the same house remain, eating and drinking such things as they give: for the labourer is worthy of his hire. Go not from house to house.