And if the house be worthy, let your peace come upon it: but if it be not worthy, let your peace return to you.
The word peace here means the common Jewish salutation, a wish for prosperity and good fortune. Ingratitude makes a household unworthy to receive it, so you withdraw the blessing and all connection with them. Some claim the apostles carried a higher peace, God's reconciliation, but that overrefines the text beyond what it plainly says.
AI summary
The apostles must not go to the Gentiles or Samaritans because Christ Himself had not revealed Himself to them. The Jews must have first offer of salvation; if they refuse it, Christ hides Himself from that place. This restraint was only for their first mission; afterwards all nations were to receive the gospel.
AI summary
Commenting on Matthew 10:5-15
Shaking dust from your feet testifies that you came without worldly gain, purely for their welfare. The dust you leave behind will rise against them in judgment, proving the Gospel was preached and rejected among them. Their refusal to hear aggravates their own condemnation.
AI summary