Old Testament heroes are best known for their most celebrated moments: Moses dividing the Red Sea; David slaying Goliath; Gideon routing an insurmountable army; Joshua marching around the defiant walls of Jericho. And Elijah—calling down fire on Mount Carmel. Blinded by the remarkable narratives of our biblical heroes, we can forget they each had a backstory—months and years of development, even difficulty, which fortified their spiritual muscle.