Christ did say to stop sinning: He said if anyone doesn't do so they are still a slave and not a child of God yet. To be a child of God it has to be you or I stop sinning and stay that way. The truth wil allow us to do it once we know it by holding to all this teaching. The blood of Jesus brings about a covenant whereby God through Christ sends liberation if we get stuck again in sin as long as we confess our sin and in answer to payers of brothers and sisters in Christ. This stops us becomng slaves completely again and keeps us free and keeps us therefore childen of God - who only has permanently free children. So we are to put off sin (fruit of flesh) and keep putting it off while putting on the Spirit-led opposites of sin like truthful speech instead of lies.
