SECONDHAND, in good condition though a little scuffed. According to Lloyd Geering, the world we inhabit is largely a product of our own making.We supply its meaning. Thus "God," a central symbol of meaning, is entirely a human creation. In "Tomorrow's God," Geering traces the collective "drift toward meaning" that gave rise to the various religions and explores the reasons they are now in decline. He argues that, for our own survival, we must consciously create new meaning for our lives and shows how the Christian tradition may lead toward a new world of meaning.