Like many people who struggle with pornography, Russell was exposed to it at a young age. The desire to use it was overpowering, and it poisoned his heart. “My life [became] completely saturated by it,” he writes, “so much so that it was like a cancer that was deeply rooted into my very fiber.” By God’s grace, he was finally set free of porn’s power—along with other addictions—when he received salvation in Jesus and was transformed from the inside out. “I credit it all to Jesus Christ, . . .  [He’s] the one who delivered me,” Russell says. Jeremiah delivered a message from God to Israel that one day He would “put [His] law in their minds and write it on their hearts” (31:33). Under this new covenant, fulfilled in Christ (Hebrews 8:6-13), all people could be transformed by God’s grace through faith. And now, “his Spirit . . . lives in [us]” (Romans 8:11), and God’s moral law has been written on our hearts. For Russell, and for all who believe, the Holy Spirit’s power provides what’s needed to turn from harmful behavior that displeases God and seeks to destroy us. Transformation isn’t always instantaneous or easy. But let’s remember, when we’re dealing with difficult—even addictive—sin, that God can transform our hearts (Jeremiah 31:33). He says, you “will know me” (v. 34 nlt), and we can also know His heart-changing power.