My whole life I have been surrounded by well-meaning encouragement to go 'higher up,' and the most-used argument was : 'You can do so much good there, for so many people.' But these voices calling me to upward mobility are completely absent from the Gospel. Jesus says: 'Anyone who loves his life loses it; anyone who hates his life in this world will keep it for eternal life (John 12:25). He also says: 'Unless you become like little children you will never enter the kingdom of heaven (Matthew 18:3). Finally he says: "You know that among the gentiles the rulers lord it over them, and great men make their authority felt; among you this is not to happen. No; anyone who wants to become great among you must be your servant, and anyone who wants to be first among you must be your slave, just as the Son of Man came, not to be served, but to serve, and to give his life as a ransom for many (Matthew 20:25-28).
This is the way of downward mobility, the descending way of Jesus. It is the way toward the poor, the suffering, the marginal, the prisoners, the refugees, the lonely, the hungry, the dying, the tortured, the homeless--toward all who ask for compassion. What do they have to offer? Not success, popularity, or power, but the joy and peace of the children of God."
From Here and Now pp. 138-139