4:39 Peace! Be still! Lit. “be muzzled.” Jesus has authority on earth to forgive sins (2:10), He is Lord of the Sabbath (2:28), He has authority in His teaching (1:22) and over the demons (1:27), and now He demonstrates His authority over nature. This calming of the storm resembles His exorcisms; there is the demonic expression of violence (1:26; 5:4, 13), the command to be “silent” (1:25 note), and the resultant calm (5:15). Jesus binds “the strong man” (3:23–27) and reclaims from his power the physical creation.