Jesus came to free us from our sins and indeed he has, but we may still be captive to the thinking of this world. God has come to free us, not only from sinful actions, but also from our sinful thoughts and motives. We need God to transform our minds and change the way we think.
Isaiah 55:8-9 “My thoughts are nothing like your thoughts,” says the Lord. “And my ways are far beyond anything you could imagine. For just as the heavens are higher than the earth, so my ways are higher than your ways and my thoughts higher than your thoughts.”