“flesh.” This refers to people, who are flesh, as we can see from when it is quoted in Hebrews 13:6. Jesus taught us not to fear what people can do to us, even if they kill us, because God will raise His believers from the dead. In contrast, Jesus said to fear God, who really could kill us forever (Matt. 10:28). Believers need to take this verse to heart because the Devil has used fear of death to keep people in bondage (Heb. 2:15).