When sending his apostles out to preach, Jesus counseled them: “When you are entering into the house, greet the household [“ wish the house peace, ” The New English Bible]; and if the house is deserving, let the peace you wish it come upon it; but if it is not deserving, let the peace from you return upon you. ”
אם ראוי הבית יבוא עליו ה’שלום ’ שלכם, אך אם איננו ראוי ישוב ה’שלום ’ שלכם אליכם ” (‏ מתי י ’: 12, 13‏).