Based on a philosophical interpretation of the ancient concepts philia and agape, the present contribution offers a comparative study of the ancient Greek ethics of friendship and the Christian theology of love. While the former tradition understands philia as a finite relationship between human selves within a sociopolitical context, agape is regarded by the latter tradition as the bond of love which God grants all humans who believe in Jesus Christ as the Messiah. Despite the fundamental differences between the two conceptions of love, they converge at one point, namely in the caring concern for the stranger, who humans are called upon to receive in hospitality.