Luke indicated that Jesus, with a solemn announcement (λέγω ὑμῖν), said that there was nobody born of a woman greater than John (μείζων ἐν γεννητοῖς γυναικῶν Ἰωάνου οὐδείς ἐστιν). However, yet even the least in the kingdom of God (ὁ δὲ μικρότερος ἐν τῇ βασιλείᾳ τοῦ Θεοῦ) was greater than him (μείζων αὐτοῦ ἐστιν). This saying about John the Baptist can be found almost word for word in Matthew, chapter 11:11. Thus, this may have been a Q source about John, like many of the other passages about John. Matthew had Jesus issue this solemn proclamation. There was no other human being greater than John the Baptist. Notice that he used his title of the Baptist there. However, those who are the least, the smallest, or the littlest in the kingdom of heaven would be greater than John. This was great praise for John. Yet, being a follower of Jesus made them even greater. Which would you rather be, the greatest human being or a follower of Jesus?
Equivalent passages to this can be found in Matthew, chapter 10:14, and Luke, chapter 9:5. Mark indicated that Jesus said that if any place (καὶ ὃς ἂν τόπος) would not receive them (μὴ δέξηται ὑμᾶς) or listen to their words (μηδὲ ἀκούσωσιν ὑμῶν), they were to leave that place (ἐκπορευόμενοι ἐκεῖθεν). They should shake off the dust from their feet (ἐκτινάξατε τὸν χοῦν τὸν ὑποκάτω τῶν ποδῶν ὑμῶν), as a witness or testimony against them (εἰς μαρτύριον αὐτοῖς). This indicated that the dust of that house was useless. Some orthodox texts have the statement about Sodom and Gomorrah that was in Matthew, chapter 10:15 that had Jesus make a comparison between the places that had rejected them with the famous wicked cities of Genesis, chapter 18:20-19:29, Sodom and Gomorrah. He said with a solemn statement (ἀμὴν λέγω ὑμῖν) that it would be more tolerable (ἀνεκτότερον ἔσ) for the land of Sodom and Gomorrah (γῇ Σοδόμων καὶ Γομόρρων) on the judgment day (ἐν ἡμέρᾳ κρίσεως) than this place that rejected his disciples (ἢ τῇ πόλει ἐκείνῃ). They had lacked hospitality to the followers of Jesus, so that they were worse than those terrible cities in Genesis.
Equivalent passages to this can be found in Matthew, chapter 10:11, and Luke, chapter 9:4. Mark indicated that Jesus (καὶ ἔλεγεν αὐτοῖς) had a very simple message about where to stay. Wherever they entered a house (Ὅπου ἐὰν εἰσέλθητε εἰς οἰκίαν), they should stay there in one place until they left (ἐκεῖ μένετε ἕως ἂν ἐξέλθητε ἐκεῖθεν). They should not switch places. They were not to go wandering around. Find a place and stay there.