 According to the church calendar, we celebrate the 15th Sunday in Ordinary Time. In the Gospel, we hear Jesus summon the 12 apostles and send them out two by two, instructing them on how to go out and to pursue his work by healing the sick and casting out demons. But he warns them of those who will not believe, and tells them when they find those who will not listen to them, to dust off their feet in testimony against them.