Look up All three readings today urge us to do one thing: fix our eyes on heaven.   In the first reading(Genesis 15:5), God told Abraham to look at the night sky.   “Count the stars, if you can. Just so . . . shall your descendants be,” he promised (Genesis 15:5).   Abraham, who was already advanced in years and childless, would somehow become the father of many nations. In the second reading, St. Paul reminds us that “our citizenship is in...