Only by solidarity with other people’s suffering can comfortable people be converted. Otherwise we are disconnected from the cross—of the world, of others, of Jesus, and finally of our own necessary participation in the great mystery of dying and rising. People who are considered outsiders and at the bottom of society—the lame, poor, blind, prostitutes, tax collectors, “sinners”—are the ones who understand Jesus’ teaching. It’s the leaders and insiders (the priests, scribes, Pharisees, teachers of the law, and Roman officials) who crucify him.
.. Brian McLaren is not afraid to say directly that it is time for us to acknowledge Christianity’s past fraught with imperialism and colonialism:
About forty years before 1492, Pope Nicholas V issued an official document called Romanus Pontifex . . . which serves as the basis for what is commonly called the Doctrine of Discovery, the teaching that whatever Christians “discover,” they can take and use as they wish. . . . Christian global mission is defined as to “invade, search out, capture, vanquish, and subdue” non-Christians around the world, and to steal “all movable and immovable goods” and to “reduce their persons to perpetual slavery”—and not only them, but their descendants. And notice the stunning use of the word convert: “to convert them to his and their use and profit.” 
.. In addition to this doctrine, selective use and interpretation of the Bible was used to justify slavery for centuries. Scripture is still used by some today to exclude and judge LGBTQIA individuals, even though Jesus said very little about sexuality and a great deal about other things we conveniently ignore.