The harvest is plentiful

Luke 10:1-12

This is a warning for those who hear the truth yet do not receive it. There was a Jewish custom whenever Jews returned home from a Gentile country; they were to shake off the dust from their feet to signify the breaking of their ties with the Gentiles. This is exactly what Jesus is referring to here and again in Luke chapter 9:1 When Jesus had called the Twelve together, he gave them power and authority to drive out all demons and to cure diseases .....