In 1 Peter 2, we're told to abstain from the passions of the flesh. Based on verses 11-20, Pastor Kent Sperry points out that that, by indulging these desires, we're playing with fire. Peter says they wage war against our soul, so they can prove harmful to us. He also says that, by abstaining from them, we can give unbelievers a cause to glorify God and silence the talk of the ignorant.