In Iron Years by Gordon R. Dickson 1981

Things Which are Caesar's - Humanity awaited a sign from the Almighty...but what a sign could He expect from man?

Homecoming - Mankind could spread to the stars - but there was no knowing if the world of their birth would ever take them back.

In Iron Years - To be human means to survive - but to survive for something.

And More - More great fiction by this year's Hugo and Nebula nominee!