On indiscriminate generosity, even (especially?) toward strangers and enemies:
“Generosity is, first, an attribute of God. The Bible describes God as one who “gives to all generously and ungrudgingly” (Jas. 1:5). Paul speaks of “the generous act of our Lord Jesus Christ” (2 Cor. 8:9) and sees a specific connection between divine generosity and impartiality (Rom. 10:12). Such a connection may also be implied in Jesus’ parable of the generous landowner (Matt. 20:1–15), in which indiscriminate generosity is presented as scandalous. Specifically, the Bible portrays God as generous in providing humanity with the gifts of nature (Gen. 1:29–30; Matt. 5:45), in offering forgiveness of sins (Ps. 86:5; Rom. 5:6–8), and in responding to prayer (Matt. 7:7–11).
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“Christian teaching also has extolled generosity to strangers and/or enemies. Jesus indicated that there is nothing special about people who do good to their own kind (Luke 6:33); his followers were to be known as people who give to everyone and do good to all, even those who hate them (Matt. 5:42–48; Luke 6:30–36). Jesus’ parable of the good Samaritan illustrates precisely this point: those who understand what Jesus means by “love your neighbor” will open their purses and use their money generously to meet the needs of people who do not affirm or even respect their religion (Luke 10:33–35).”
Mark Allan Powell, “Generosity,” in Dictionary of Scripture and Ethics, ed. Joel B. Green (Grand Rapids, MI: Baker Academic, 2011), 324.