Not all Christians will cross major cultural boundaries or become full-time missionaries, but all of us must be mobilized to pray for the world vision he has summoned us to share with him. An excellent resource in this respect is Patrick Johnstone's Operation World, which lists every nation of the world, aims to depict accurately the state of the church there, and provides important points for prayer; it ranks among those classic resources of which all missions-minded Christians should avail themselves. After praying through it, Christians may find themselves burdened for specific peoples and parts of the world and perhaps may seek ways to minister to representatives of those peoples in our own land. And who knows-in the end God may call some of us who pray to go, just as in chapter 10 Jesus sends those who shared his burden in prayer in 9:38.