Jesus tells Peter he’s about to be “sifted like wheat”—shaken hard, beaten, and agitated until he practically falls apart. Satan’s going to do it. And Jesus is going to allow it, in the interest of showing Peter who he really is. Lawrence uses the simple agrarian metaphor of sifting as a jumping-off point for a rigorously honest, deeply challenging, yet powerfully comforting exploration of the trials that beat us down, the good God who allows our troubles, and the incredible beauty the process of sifting can reveal in us.