Romans 10:16-17

16 But they have not all obeyed the gospel. For Isaiah says, “Lord, who has believed our report?” 17 So then faith comes by hearing, and hearing by the word of God.

Faith comes from hearing the message, and the message is heard through the word about Christ.
Faith comes from hearing what is told, and what is heard comes by the preaching of the message concerning Christ.

Matthew 10:11-15

“Now whatever city or town you enter, inquire who in it is worthy, and stay there till you go out.

And when you go into a household, greet it.

If the household is worthy, let your peace come upon it. But if it is not worthy, let your peace return to you.

And whoever will not receive you nor hear your words, when you depart from that house or city, shake off the dust from your feet.

Assuredly, I say to you, it will be more tolerable for the land of Sodom and Gomorrah in the day of judgment than for that city!

If anyone does not welcome us or listen to our message of the gospel, we should leave that house or town or city and shake the dust of it off our feet in contempt, breaking all ties.