saving grace. The true Christian is saved by faith (Eph. 2:8–9) and lives by faith. “For we walk by faith, not by sight” (2 Cor. 5:7). Cynical American editor H. L. Mencken defined faith as “an illogical belief in the occurrence of the improbable,” and humorist Mark Twain had one of his characters say that “faith was believing what you know ain’t so.” And yet, whether they know it or not, all day long the population of planet Earth lives by faith! They trust their physician’s diagnosis