What is "safehold"

n. a refuge from attack

Safehold is a science fiction book series by David Weber, which currently consists of eight titles, the latest of which was released in October 2015. The series is mostly set around the 31st century, on a distant world dubbed "Safehold" where a group of humans has hidden themselves from an enemy responsible for the end of all other human civilization, the Gbaba.

The humans on Safehold avoided detection by reverting to a pre-electrical and pre-industrial technology base and incorporating that into a religious belief system which discouraged scientific curiosity and forbade any higher technology on penalty of death. The threat of the Gbaba is barely mentioned in the books so far; the main issue is the divergence of the official church from its original aims versus the outlying areas which deny the leadership of the corrupt vicars.

Every book after the first has a name taken from a hymn.