and a good perspective,
I’ve found its because of arrogance that people do not understand and therefore can not believe. God will not sit down with us and sup with us through our arrogance, we must come humbly to him to learn and he will be there and we will hear him.
For those that refuse to receive the message, we can only brush the dust off and as were leaving pray that God will do something in the future to cause that person to consider him before they run out of time (their life),
The brushing the dust off part is the hard one for me. It comes easy with time, however. You can’t beat it into people. You can only plant seeds. Even the “brushing off your feet” part may have been God’s instruction to not continue in towns where people would not listen, even though God knew that some in those towns may have a change of heart later.