And if the house is worthy, let your peace come upon it, but if it is not worthy, let your peace return to you. Bible

“let your peace come upon it.” This is an idiom. If a person was worthy, the guest would bless the house, and that blessing would involve “shalom,” translated “peace” but really meaning “total well-being.” If the Apostles were well received and well treated, they were to bless the house with shalom. Jesus instructed his disciples to let their shalom fall on those who graciously took care of them.

Commentary for: Matthew 10:13