Commentaries:
Robertson's Word Pictures (NT)
Shake off the dust (ektinacate ton koniorton). Shake out, a rather violent gesture of disfavour. The Jews had violent prejudices against the smallest particles of Gentile dust, not as a purveyor of disease of which they did not know, but because it was regarded as the putrescence of death. If the apostles were mistreated by a host or hostess, they were to be treated as if they were Gentiles (cf. Matthew 18:17; Acts 18:6). Here again we have a restriction that was for this special tour with its peculiar perils.
Other Robertson's Word Pictures (NT) entries containing Matthew 10:14:
Luke 9:5
Luke 10:11
Acts 13:51
Colossians 4:10
DISCLAIMER: Church of the Great God (CGG) provides these resources to aid the individual in studying the Bible. However, it is up to the individual to "prove all things, and hold fast to that which is good" (I Thessalonians 5:21). The content of these resources does not necessarily reflect the views of CGG. They are provided for information purposes only.