Note especially "The Man", a powerful, classic story that posits Jesus will incarnate on any world where intelligent life arises. (Also found in numerous other collections.)

Other comments:

The Illustrated Man is not actually a novel, but an collection of short stories. There is a narrative which weaves them together. "'For, you see,' said the Illustrated Man, 'these Illustrations predict the future.'" Of particular interest are "The Man", in which travellers from Earth land on a planet, only to discover that their marvellous appearance has been upstaged by the arrival of Christ the previous day, and "The Fire Balloons", in which missionaries from Earth encounter aliens who do not sin. – Greg Slade

Other Comments: For the print editions, check the book page.