Matthew 10:14

10:14 And if anyone will not welcome you or listen to your message, shake the dust off ¹  your feet as you leave that house or that town.

Acts 13:51

13:51 So after they shook ²  the dust off their feet ³  in protest against them, they went to Iconium. ⁴ 

Acts 18:6

18:6 When they opposed him ⁵  and reviled him, ⁶  he protested by shaking out his clothes ⁷  and said to them, “Your blood ⁸  be on your own heads! I am guiltless! ⁹  From now on I will go to the Gentiles!”

[10:14]  ¹ sn To shake the dust off represented shaking off the uncleanness from one’s feet; see Luke 10:11; Acts 13:51; 18:6. It was a sign of rejection.

[13:51]  ² tn The participle ἐκτιναξάμενοι (ektinaxamenoi) is taken temporally. It could also be translated as a participle of attendant circumstance (“So they shook…and went”).

[13:51]  ³ sn Shaking the dust off their feet was a symbolic gesture commanded by Jesus to his disciples, Matt 10:14; Mark 6:11; Luke 9:5. It shows a group of people as culpable before God.

[13:51]  ⁴ sn Iconium was a city in Lycaonia about 90 mi (145 km) east southeast of Pisidian Antioch. It was the easternmost city of Phrygia.

[18:6]  ⁵ tn The word “him” is not in the Greek text but is implied. Direct objects were often omitted in Greek when clear from the context, but must be supplied for the modern English reader.

[18:6]  ⁶ tn The participle βλασφημούντων (blasfhmountwn) has been taken temporally. The direct object (“him”) is implied rather than expressed and could be impersonal (“it,” referring to what Paul was saying rather than Paul himself), but the verb occurs more often in contexts involving defamation or slander against personal beings (not always God). For a very similar context to this one, compare Acts 13:45. The translation “blaspheme” is not used because in contemporary English its meaning is more narrowly defined and normally refers to blasphemy against God (not what Paul’s opponents were doing here). What they were doing was more like slander or defamation of character.

[18:6]  ⁷ tn Grk “shaking out his clothes, he said to them.” L&N 16:8 translates Acts 18:6 “when they opposed him and said evil things about him, he protested by shaking the dust from his clothes.” The addition of the verb “protested by” in the translation is necessary to clarify for the modern reader that this is a symbolic action. It is similar but not identical to the phrase in Acts 13:51, where the dust from the feet is shaken off. The participle ἐκτιναξάμενος (ektinaxameno") has been translated as a finite verb due to requirements of contemporary English style.

[18:6]  ⁸ sn Your blood be on your own heads! By invoking this epithet Paul declared himself not responsible for their actions in rejecting Jesus whom Paul preached (cf. Ezek 33:4; 3:6-21; Matt 23:35; 27:25).

[18:6]  ⁹ tn Or “innocent.” BDAG 489 s.v. καθαρός 3.a has “guiltless Ac 18:6.”