Brothers and sisters in faith, when was this verse revealed, why and what does God mean?

It is a difficult thing for people to seek refuge in God especially in the "best" of times. However the "best" of times is exactly when we need God's protection from "the evil whisperers" (Satan, Jinn and their human cohorts) the most. Everyone runs to God in time of peril or threat but only those who seek God's grace know that moral peril and threat are a constant force in this world.