Verse 5.And whosoever will not receive you, when ye go out of that city, shake off the very duet from your feet for a testimony againstthem. It was the custom of the Jews when they returned from foreign (Gentile) lands, as they crossed the frontiers of the Holy Land, to shake the dust from off their feet. This was an act symbolizing that they had broken, now on their return to their own land, all communion with Gentile peoples which a residence among them had necessitated for a season. The bitter hatred and loathing of the Jews, after their return from the Captivity, for all Gentile races can only be understood by the student of the Talmud. So comprehensive and perfect a hatred, enduring, too, for centuries, has never been witnessed in the case of any other peoples. This accounts in great measure for the retaliative persecution which more or less has been carried on all through the Christian era against this marvellous race. In our day - the day of a liberalism possibly exaggerated and unreal - in many parts of Europe the untrained sense of the masses strangely revolts against this spirit of toleration; and wild excesses, massacres, and bitter persecution - the Judenhetz, hatred of the Jews in Germany and in Russia - are among the curious results of the liberality and universal toleration of the time.
9:1-9 Christ sent his twelve disciples abroad, who by this time were able to teach others what they had received from the Lord. They must not be anxious to commend themselves to people's esteem by outward appearance. They must go as they were. The Lord Jesus is the fountain of power and authority, to whom all creatures must, in one way or another, be subject; and if he goes with the word of his ministers in power, to deliver sinners from Satan's bondage, they may be sure that he will care for their wants. When truth and love thus go together, and yet the message of God is rejected and despised, it leaves men without excuse, and turns to a testimony against them. Herod's guilty conscience was ready to conclude that John was risen from the dead. He desired to see Jesus; and why did he not go and see him? Probably, because he thought it below him, or because he wished not to have any more reprovers of sin. Delaying it now, his heart was hardened, and when he did see Jesus, he was as much prejudiced against him as others, Lu 23:11.
when ye go out of the city; where lodging and entertainment are refused you;
shake off the very dust from your feet, for a testimony against them; See Gill on Matthew 10:14, Mark 6:11