Certainly, otherworldly concerns have a deep and significant place in all religions worthy of the name. Any religion that is completely earthbound sells its birthright for a mess of naturalistic pottage. Religion at its best, deals not only with man’s preliminary concerns but with his inescapable ultimate concern. When religion overlooks this basic fact it is reduced to a mere ethical system in which eternity is absorbed into time and God is relegated to a sort of meaningless figment of the human imagination.

But a religion true to its nature must also be concerned about man’s social conditions. Religion deals with both earth and heaven, both time and eternity. Religion operates not only on the vertical plane but also on the horizontal. It seeks not only to integrate men with God but to integrate men with men and each man with himself.

Martin Luther King, Jr. (1929-1968) American clergyman, civil rights leader, social activist, preacher

Stride Toward Freedom, ch. 2 “Montgomery Before the Protest” (1958)
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